diff --git a/extensions/curl/extension.cpp b/extensions/curl/extension.cpp
index 0631d93b4..f6dc7f359 100644
--- a/extensions/curl/extension.cpp
+++ b/extensions/curl/extension.cpp
@@ -37,6 +37,7 @@
 #include "curlapi.h"
 #include "FileDownloader.h"
 #include "MemoryDownloader.h"
+#include <string.h>
 
 
 /**