diff --git a/compiler/gen/src/llvm/build.rs b/compiler/gen/src/llvm/build.rs
index 8d308d9177..2d835c40fc 100644
--- a/compiler/gen/src/llvm/build.rs
+++ b/compiler/gen/src/llvm/build.rs
@@ -94,6 +94,10 @@ impl<'a, 'ctx, 'env> Env<'a, 'ctx, 'env> {
     pub fn ptr_int(&self) -> IntType<'ctx> {
         ptr_int(self.context, self.ptr_bytes)
     }
+
+    pub fn small_str_bytes(&self) -> u32 {
+        self.ptr_bytes * 2
+    }
 }
 
 pub fn module_from_builtins<'ctx>(ctx: &'ctx Context, module_name: &str) -> Module<'ctx> {
diff --git a/compiler/gen/src/llvm/build_str.rs b/compiler/gen/src/llvm/build_str.rs
index e40f70253d..354298ef96 100644
--- a/compiler/gen/src/llvm/build_str.rs
+++ b/compiler/gen/src/llvm/build_str.rs
@@ -401,7 +401,7 @@ where
             byte_array_ptr,
             &[ctx
                 .i8_type()
-                .const_int(((env.ptr_bytes * 2) - 1) as u64, false)],
+                .const_int(env.small_str_bytes() as u64 - 1, false)],
             "final_byte_ptr",
         )
     };