diff --git a/scripts/data_files/error.fmt b/scripts/data_files/error.fmt
index e908aac..d106acd 100644
--- a/scripts/data_files/error.fmt
+++ b/scripts/data_files/error.fmt
@@ -62,7 +62,7 @@
             break;
     }
 
-    return NULL;
+    return( NULL );
 }
 
 const char * mbedtls_low_level_strerr( int error_code )
@@ -85,7 +85,7 @@
             break;
     }
 
-    return NULL;
+    return( NULL );
 }
 
 void mbedtls_strerror( int ret, char *buf, size_t buflen )
diff --git a/scripts/generate_errors.pl b/scripts/generate_errors.pl
index 5aef37a..0512d59 100755
--- a/scripts/generate_errors.pl
+++ b/scripts/generate_errors.pl
@@ -161,7 +161,7 @@
     }
 
     ${$code_check} .= "${white_space}case -($error_name):\n".
-                      "${white_space}    return \"$module_name - $description\";\n"
+                      "${white_space}    return( \"$module_name - $description\" );\n"
 };
 
 if ($ll_old_define ne "")