diff --git a/src/d_iwad.h b/src/d_iwad.h
index 3db7dda3..2f68fe66 100644
--- a/src/d_iwad.h
+++ b/src/d_iwad.h
@@ -36,7 +36,7 @@ typedef struct
     const char *name;
     GameMission_t mission;
     GameMode_t mode;
-    char *description;
+    const char *description;
 } iwad_t;
 
 char *D_FindWADByName(const char *filename);