diff --git a/librb/src/win32.c b/librb/src/win32.c
index bf0635fd..d9184d97 100644
--- a/librb/src/win32.c
+++ b/librb/src/win32.c
@@ -619,7 +619,7 @@ const char *
 rb_path_to_self(void)
 {
 	static char path_buf[MAX_PATH];
-	GetModuleFileName(NULL, exepath, MAX_PATH);
+	GetModuleFileName(NULL, path_buf, MAX_PATH);
 	return path_buf;
 }