diff --git a/lib/strerror.c b/lib/strerror.c
index 85baa635da5d523f9835e9eb0e558bd6304dd6b2..b567f9bee0a2e56ef041f3a88e1cb03b95e0ff20 100644
--- a/lib/strerror.c
+++ b/lib/strerror.c
@@ -553,7 +553,7 @@ const char *Curl_strerror(struct connectdata *conn, int err)
 
 #if defined(WIN32) && !defined(__CYGWIN__)
 
-#if _WIN32_WCE
+#ifdef _WIN32_WCE
   buf[0]=0;
   {
     wchar_t wbuf[256];