diff --git a/src/uu/env/src/env.rs b/src/uu/env/src/env.rs
index df3aabf40..d5a7c8659 100644
--- a/src/uu/env/src/env.rs
+++ b/src/uu/env/src/env.rs
@@ -917,6 +917,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use uucore::locale;
 
     #[test]
     fn test_split_string_environment_vars_test() {
@@ -951,12 +952,14 @@ mod tests {
 
     #[test]
     fn test_error_cases() {
+        let _ = locale::setup_localization("env");
+
         // Test EnvBackslashCNotAllowedInDoubleQuotes
         let result = parse_args_from_str(&NCvt::convert(r#"sh -c "echo \c""#));
         assert!(result.is_err());
         assert_eq!(
             result.unwrap_err().to_string(),
-            "'\\c' must not appear in double-quoted -S string"
+            "'\\c' must not appear in double-quoted -S string at position 13"
         );
 
         // Test EnvInvalidBackslashAtEndOfStringInMinusS
@@ -964,7 +967,7 @@ mod tests {
         assert!(result.is_err());
         assert_eq!(
             result.unwrap_err().to_string(),
-            "no terminating quote in -S string"
+            "no terminating quote in -S string at position 13 for quote '\"'"
         );
 
         // Test EnvInvalidSequenceBackslashXInMinusS
@@ -982,7 +985,7 @@ mod tests {
         assert!(result.is_err());
         assert_eq!(
             result.unwrap_err().to_string(),
-            "no terminating quote in -S string"
+            "no terminating quote in -S string at position 12 for quote '\"'"
         );
 
         // Test variable-related errors
diff --git a/tests/by-util/test_env.rs b/tests/by-util/test_env.rs
index c52202ec2..a4319b71f 100644
--- a/tests/by-util/test_env.rs
+++ b/tests/by-util/test_env.rs
@@ -522,7 +522,7 @@ fn test_split_string_into_args_s_escaped_c_not_allowed() {
     let out = scene.ucmd().args(&[r#"-S"\c""#]).fails().stderr_move_str();
     assert_eq!(
         out,
-        "env: '\\c' must not appear in double-quoted -S string\n"
+        "env: '\\c' must not appear in double-quoted -S string at position 2\n"
     );
 }
 
@@ -608,91 +608,91 @@ fn test_env_parsing_errors() {
         .arg("-S\\|echo hallo") // no quotes, invalid escape sequence |
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\|' in -S\n");
+        .stderr_is("env: invalid sequence '\\|' in -S at position 1\n");
 
     ts.ucmd()
         .arg("-S\\a") // no quotes, invalid escape sequence a
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\a' in -S\n");
+        .stderr_is("env: invalid sequence '\\a' in -S at position 1\n");
 
     ts.ucmd()
         .arg("-S\"\\a\"") // double quotes, invalid escape sequence a
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\a' in -S\n");
+        .stderr_is("env: invalid sequence '\\a' in -S at position 2\n");
 
     ts.ucmd()
         .arg(r#"-S"\a""#) // same as before, just using r#""#
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\a' in -S\n");
+        .stderr_is("env: invalid sequence '\\a' in -S at position 2\n");
 
     ts.ucmd()
         .arg("-S'\\a'") // single quotes, invalid escape sequence a
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\a' in -S\n");
+        .stderr_is("env: invalid sequence '\\a' in -S at position 2\n");
 
     ts.ucmd()
         .arg(r"-S\|\&\;") // no quotes, invalid escape sequence |
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\|' in -S\n");
+        .stderr_is("env: invalid sequence '\\|' in -S at position 1\n");
 
     ts.ucmd()
         .arg(r"-S\<\&\;") // no quotes, invalid escape sequence <
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\<' in -S\n");
+        .stderr_is("env: invalid sequence '\\<' in -S at position 1\n");
 
     ts.ucmd()
         .arg(r"-S\>\&\;") // no quotes, invalid escape sequence >
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\>' in -S\n");
+        .stderr_is("env: invalid sequence '\\>' in -S at position 1\n");
 
     ts.ucmd()
         .arg(r"-S\`\&\;") // no quotes, invalid escape sequence `
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\`' in -S\n");
+        .stderr_is("env: invalid sequence '\\`' in -S at position 1\n");
 
     ts.ucmd()
         .arg(r#"-S"\`\&\;""#) // double quotes, invalid escape sequence `
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\`' in -S\n");
+        .stderr_is("env: invalid sequence '\\`' in -S at position 2\n");
 
     ts.ucmd()
         .arg(r"-S'\`\&\;'") // single quotes, invalid escape sequence `
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\`' in -S\n");
+        .stderr_is("env: invalid sequence '\\`' in -S at position 2\n");
 
     ts.ucmd()
         .arg(r"-S\`") // ` escaped without quotes
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\`' in -S\n");
+        .stderr_is("env: invalid sequence '\\`' in -S at position 1\n");
 
     ts.ucmd()
         .arg(r#"-S"\`""#) // ` escaped in double quotes
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\`' in -S\n");
+        .stderr_is("env: invalid sequence '\\`' in -S at position 2\n");
 
     ts.ucmd()
         .arg(r"-S'\`'") // ` escaped in single quotes
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\`' in -S\n");
+        .stderr_is("env: invalid sequence '\\`' in -S at position 2\n");
 
     ts.ucmd()
         .args(&[r"-S\🦉"]) // ` escaped in single quotes
         .fails_with_code(125)
         .no_stdout()
-        .stderr_is("env: invalid sequence '\\\u{FFFD}' in -S\n"); // gnu doesn't show the owl. Instead a invalid unicode ?
+        .stderr_is("env: invalid sequence '\\\u{FFFD}' in -S at position 1\n"); // gnu doesn't show the owl. Instead a invalid unicode ?
 }
 
 #[test]
diff --git a/util/gnu-patches/tests_env_env-S.pl.patch b/util/gnu-patches/tests_env_env-S.pl.patch
index 1ea860fa0..b3c5d34d1 100644
--- a/util/gnu-patches/tests_env_env-S.pl.patch
+++ b/util/gnu-patches/tests_env_env-S.pl.patch
@@ -2,27 +2,41 @@ Index: gnu/tests/env/env-S.pl
 ===================================================================
 --- gnu.orig/tests/env/env-S.pl
 +++ gnu/tests/env/env-S.pl
-@@ -212,27 +212,28 @@ my @Tests =
-       {ERR=>"$prog: no terminating quote in -S string\n"}],
+@@ -200,36 +200,37 @@ my @Tests =
+
+      # Test Error Conditions
+      ['err1', q[-S'"\\c"'], {EXIT=>125},
+-      {ERR=>"$prog: '\\c' must not appear in double-quoted -S string\n"}],
++      {ERR=>"$prog: '\\c' must not appear in double-quoted -S string at position 2\n"}],
+      ['err2', q[-S'A=B\\'], {EXIT=>125},
+-      {ERR=>"$prog: invalid backslash at end of string in -S\n"}],
++      {ERR=>"$prog: invalid backslash at end of string in -S at position 4 in context Unquoted\n"}],
+      ['err3', q[-S'"A=B\\"'], {EXIT=>125},
+-      {ERR=>"$prog: no terminating quote in -S string\n"}],
++      {ERR=>"$prog: no terminating quote in -S string at position 6 for quote '\"'\n"}],
+      ['err4', q[-S"'A=B\\\\'"], {EXIT=>125},
+-      {ERR=>"$prog: no terminating quote in -S string\n"}],
++      {ERR=>"$prog: no terminating quote in -S string at position 6 for quote '''\n"}],
       ['err5', q[-S'A=B\\q'], {EXIT=>125},
-       {ERR=>"$prog: invalid sequence '\\q' in -S\n"}],
+-      {ERR=>"$prog: invalid sequence '\\q' in -S\n"}],
 -     ['err6', q[-S'A=$B'], {EXIT=>125},
 -      {ERR=>"$prog: only \${VARNAME} expansion is supported, error at: \$B\n"}],
++      {ERR=>"$prog: invalid sequence '\\q' in -S at position 4\n"}],
 +     ['err6', q[-S'A=$B echo hello'], {EXIT=>0},
 +      {OUT=>"hello"}],
       ['err7', q[-S'A=${B'], {EXIT=>125},
 -      {ERR=>"$prog: only \${VARNAME} expansion is supported, " .
 -           "error at: \${B\n"}],
-+      {ERR=>"$prog" . qq[: variable name issue (at 5): Missing closing brace\n]}],
++      {ERR=>"$prog" . qq[: variable name issue (at 5): Missing closing brace at position 5\n]}],
       ['err8', q[-S'A=${B%B}'], {EXIT=>125},
 -      {ERR=>"$prog: only \${VARNAME} expansion is supported, " .
 -           "error at: \${B%B}\n"}],
-+      {ERR=>"$prog" . qq[: variable name issue (at 5): Unexpected character: '%', expected a closing brace ('}') or colon (':')\n]}],
++      {ERR=>"$prog" . qq[: variable name issue (at 5): Unexpected character: '%', expected a closing brace ('}') or colon (':') at position 5\n]}],
       ['err9', q[-S'A=${9B}'], {EXIT=>125},
 -      {ERR=>"$prog: only \${VARNAME} expansion is supported, " .
 -           "error at: \${9B}\n"}],
-+      {ERR=>"$prog" . qq[: variable name issue (at 4): Unexpected character: '9', expected variable name must not start with 0..9\n]}],
- 
++      {ERR=>"$prog" . qq[: variable name issue (at 4): Unexpected character: '9', expected variable name must not start with 0..9 at position 4\n]}],
+
       # Test incorrect shebang usage (extraneous whitespace).
       ['err_sp2', q['-v -S cat -n'], {EXIT=>125},
 -      {ERR=>"env: invalid option -- ' '\n" .
@@ -42,6 +56,6 @@ Index: gnu/tests/env/env-S.pl
 +            "Usage: $prog [OPTION]... [-] [NAME=VALUE]... [COMMAND [ARG]...]\n\n" .
 +            "For more information, try '--help'.\n" .
 +            "$prog: use -[v]S to pass options in shebang lines\n"}],
- 
+
       # Also diagnose incorrect shebang usage when failing to exec.
       # This typically happens with: