diff --git a/panda/src/putil/factoryBase.h b/panda/src/putil/factoryBase.h
index 474e9a6905..1a97494356 100644
--- a/panda/src/putil/factoryBase.h
+++ b/panda/src/putil/factoryBase.h
@@ -22,6 +22,7 @@
 #include "factoryParams.h"
 
 #include "pvector.h"
+#include "pmap.h"
 
 ////////////////////////////////////////////////////////////////////
 //       Class : FactoryBase