diff --git a/neo/d3xp/script/Script_Interpreter.cpp b/neo/d3xp/script/Script_Interpreter.cpp
index 6e07931..0442500 100644
--- a/neo/d3xp/script/Script_Interpreter.cpp
+++ b/neo/d3xp/script/Script_Interpreter.cpp
@@ -425,7 +425,7 @@ idInterpreter::Error
 Aborts the currently executing function
 ============
 */
-void idInterpreter::Error( char *fmt, ... ) const {
+void idInterpreter::Error( 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 d0ab7a9..8d6c529 100644
--- a/neo/d3xp/script/Script_Interpreter.h
+++ b/neo/d3xp/script/Script_Interpreter.h
@@ -93,7 +93,7 @@ public:
 	int					CurrentLine( void ) const;
 	const char			*CurrentFile( void ) const;
 
-	void				Error( char *fmt, ... ) const id_attribute((format(printf,2,3)));
+	void				Error( const char *fmt, ... ) const id_attribute((format(printf,2,3)));
 	void				Warning( char *fmt, ... ) const id_attribute((format(printf,2,3)));
 	void				DisplayInfo( void ) const;