diff --git a/neo/d3xp/script/Script_Interpreter.cpp b/neo/d3xp/script/Script_Interpreter.cpp
index 0442500..de63e7b 100644
--- a/neo/d3xp/script/Script_Interpreter.cpp
+++ b/neo/d3xp/script/Script_Interpreter.cpp
@@ -450,7 +450,7 @@ idInterpreter::Warning
 Prints file and line number information with warning.
 ============
 */
-void idInterpreter::Warning( char *fmt, ... ) const {
+void idInterpreter::Warning( const char *fmt, ... ) const {
 	va_list argptr;
 	char	text[ 1024 ];
 
diff --git a/neo/d3xp/script/Script_Interpreter.h b/neo/d3xp/script/Script_Interpreter.h
index 8d6c529..a1e650a 100644
--- a/neo/d3xp/script/Script_Interpreter.h
+++ b/neo/d3xp/script/Script_Interpreter.h
@@ -94,7 +94,7 @@ public:
 	const char			*CurrentFile( void ) const;
 
 	void				Error( const char *fmt, ... ) const id_attribute((format(printf,2,3)));
-	void				Warning( char *fmt, ... ) const id_attribute((format(printf,2,3)));
+	void				Warning( const char *fmt, ... ) const id_attribute((format(printf,2,3)));
 	void				DisplayInfo( void ) const;
 
 	bool				BeginMultiFrameEvent( idEntity *ent, const idEventDef *event );