diff --git a/lang/cem/cemcom/options.c b/lang/cem/cemcom/options.c
index 79416b401..7569fc492 100644
--- a/lang/cem/cemcom/options.c
+++ b/lang/cem/cemcom/options.c
@@ -21,7 +21,9 @@ extern int inc_pos;
 
 extern char options[];
 extern int idfsize;
+#ifdef USE_TMP
 extern char *tmpfdir;	/* main.c */
+#endif USE_TMP
 
 int txt2int();