1 files changed, 1 insertions, 1 deletions

diff --git a/uisimulator/win32/dir-win32.c b/uisimulator/win32/dir-win32.c
index d8575213dc..dfdb6364f1 100644
--- a/uisimulator/win32/dir-win32.c
+++ b/uisimulator/win32/dir-win32.c
@@ -28,7 +28,7 @@
 // opendir
 // open directory for scanning
 DIR *opendir (
-              char *dirname // directory name
+              const char *dirname // directory name
               )
 {
     DIR                 *p = (DIR*)malloc(sizeof(DIR));