diff --git a/src/modules/files/efuns.c b/src/modules/files/efuns.c
index 1274095b3ce191040e14f2f53b83e1d7b5f06705..88787f39d8047d7911914d105b5ae7df45cc0d2a 100644
--- a/src/modules/files/efuns.c
+++ b/src/modules/files/efuns.c
@@ -1184,7 +1184,7 @@ void f_get_dir(INT32 args)
   }
 
 #ifdef READDIR_DEBUG
-  fprintf(stderr, "FindFirstFile(\"%S\")...\n", STR1(str));
+  fprintf(stderr, "FindFirstFile(\"%S\")...\n", STR1(sb.s));
 #endif /* READDIR_DEBUG */
 
   dir = FindFirstFileW(STR1(sb.s), &d);