diff --git a/lib/strerror.h b/lib/strerror.h
index 278c1082f0a605..a314327bbd680d 100644
--- a/lib/strerror.h
+++ b/lib/strerror.h
@@ -24,7 +24,7 @@
 
 #include "urldata.h"
 
-#define STRERROR_LEN 128 /* a suitable length */
+#define STRERROR_LEN 256 /* a suitable length */
 
 const char *Curl_strerror(int err, char *buf, size_t buflen);
 #if defined(WIN32) || defined(_WIN32_WCE)