diff -urN roadfighter-1.0.1269/src/debug.cpp roadfighter-1.0.1269-patched/src/debug.cpp
--- roadfighter-1.0.1269/src/debug.cpp	2008-03-19 06:00:21.000000000 +1000
+++ roadfighter-1.0.1269-patched/src/debug.cpp	2011-12-14 01:45:42.114188155 +1100
@@ -28,7 +28,7 @@
     if (fp == 0)
 		fp = f1open("roadfighter.dbg", "w", USERDATA);
 
-    fprintf(fp, text);
+    fprintf(fp, "%s", text);
     fflush(fp);
 } /* glprintf */