diff --git a/source/duke3d/src/gamedef.h b/source/duke3d/src/gamedef.h
index 01c531df9..e04175452 100644
--- a/source/duke3d/src/gamedef.h
+++ b/source/duke3d/src/gamedef.h
@@ -233,7 +233,6 @@ void C_SetCfgName(const char *cfgname);
 void C_ReportError(int error);
 void C_Compile(const char *filenam);
 
-extern int32_t g_errorLineNum;
 extern int32_t g_tw;
 
 typedef struct {