diff --git a/panda/src/pgui/pgItem.cxx b/panda/src/pgui/pgItem.cxx
index 663522204a..74201d01b0 100644
--- a/panda/src/pgui/pgItem.cxx
+++ b/panda/src/pgui/pgItem.cxx
@@ -30,6 +30,7 @@
 #include "boundingSphere.h"
 #include "boundingBox.h"
 #include "config_mathutil.h"
+#include "pipeline.h"
 
 #ifdef HAVE_AUDIO
 #include "audioSound.h"