diff --git a/src/parser.rs b/src/parser.rs
index 34456e09..fcac8f23 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -1242,7 +1242,7 @@ impl<'a> Parser<'a> {
                 expr: Box::new(expr),
                 substring_from: from_expr.map(Box::new),
                 substring_for: to_expr.map(Box::new),
-                special: !self.dialect.supports_substring_from_for_expr(),
+                special: false,
             })
         } else {
             // PARSE SUBSTRING(EXPR, start, length)
@@ -1261,7 +1261,7 @@ impl<'a> Parser<'a> {
                 expr: Box::new(expr),
                 substring_from: from_expr.map(Box::new),
                 substring_for: to_expr.map(Box::new),
-                special: !self.dialect.supports_substring_from_for_expr(),
+                special: true,
             })
         }
     }