diff --git a/panda/src/grutil/movieTexture.cxx b/panda/src/grutil/movieTexture.cxx
index c8bdbf43ee..aac46d22a2 100644
--- a/panda/src/grutil/movieTexture.cxx
+++ b/panda/src/grutil/movieTexture.cxx
@@ -24,6 +24,7 @@
 #include "config_grutil.h"
 #include "bamCacheRecord.h"
 #include "bamReader.h"
+#include "bamWriter.h"
 #include "math.h"
 #include "audioSound.h"