diff --git a/panda/src/downloader/httpAuthorization.h b/panda/src/downloader/httpAuthorization.h
index 9c8e9d94ad..95461b0771 100644
--- a/panda/src/downloader/httpAuthorization.h
+++ b/panda/src/downloader/httpAuthorization.h
@@ -25,6 +25,7 @@
 
 #include "referenceCount.h"
 #include "httpEnum.h"
+#include "pmap.h"
 
 class URLSpec;