diff --git a/panda/src/downloader/virtualFileHTTP.cxx b/panda/src/downloader/virtualFileHTTP.cxx
index dcb9036d87..8e392c3d16 100644
--- a/panda/src/downloader/virtualFileHTTP.cxx
+++ b/panda/src/downloader/virtualFileHTTP.cxx
@@ -13,9 +13,12 @@
 
 #include "virtualFileHTTP.h"
 #include "virtualFileMountHTTP.h"
+#include "ramfile.h"
 #include "stringStream.h"
 #include "zStream.h"
 
+#include <iterator>
+
 #ifdef HAVE_OPENSSL
 
 using std::istream;