diff --git a/src/strings_func.h b/src/strings_func.h
--- a/src/strings_func.h
+++ b/src/strings_func.h
@@ -113,4 +113,4 @@ void CheckForMissingGlyphsInLoadedLangua
 
 int strnatcmp(const char *s1, const char *s2);
 
-#endif /* STRINGS_TYPE_H */
+#endif /* STRINGS_FUNC_H */