diff --git a/src/ofxHttpTypes.h b/src/ofxHttpTypes.h
index 5d88b36..3f69562 100644
--- a/src/ofxHttpTypes.h
+++ b/src/ofxHttpTypes.h
@@ -14,6 +14,7 @@
 #define OFX_HTTP_POST 1
 
 #include "ofUtils.h"
+#include "ofFileUtils.h"
 
 struct ofxHttpForm{