diff --git a/libs/wine/config.c b/libs/wine/config.c
index 6bb87b06a3d..93dc7e091fd 100644
--- a/libs/wine/config.c
+++ b/libs/wine/config.c
@@ -141,7 +141,7 @@ static char *get_runtime_libdir(void)
 static char *get_runtime_bindir( const char *argv0 )
 {
     char *p, *bindir, *cwd;
-    size_t len, size;
+    int len, size;
 
 #ifdef linux
     for (size = 256; ; size *= 2)