diff --git a/panda/src/pgraph/nodePath.h b/panda/src/pgraph/nodePath.h
index 4f0849fac4..eaec935a29 100644
--- a/panda/src/pgraph/nodePath.h
+++ b/panda/src/pgraph/nodePath.h
@@ -41,6 +41,8 @@
 #include "pta_LVecBase2.h"
 #include "stl_compares.h"
 #include "shaderInput.h"
+#include "internalNameCollection.h"
+#include "materialCollection.h"
 #include "textureCollection.h"
 #include "textureStageCollection.h"
 
@@ -49,13 +51,9 @@ class FindApproxPath;
 class FindApproxLevelEntry;
 class Light;
 class PolylightNode;
-class InternalNameCollection;
 class Texture;
 class TextureStage;
-class TextureCollection;
-class TextureStageCollection;
 class Material;
-class MaterialCollection;
 class Fog;
 class GlobPattern;
 class PreparedGraphicsObjects;
@@ -1054,6 +1052,8 @@ private:
 
 INLINE std::ostream &operator << (std::ostream &out, const NodePath &node_path);
 
+#include "nodePathCollection.h"
+
 #include "nodePath.I"
 
 #endif