diff --git a/dtool/src/cppparser/cppExpression.cxx b/dtool/src/cppparser/cppExpression.cxx
index 5adfb28232..8456c402f5 100644
--- a/dtool/src/cppparser/cppExpression.cxx
+++ b/dtool/src/cppparser/cppExpression.cxx
@@ -17,6 +17,7 @@
 #include "cppType.h"
 #include "cppSimpleType.h"
 #include "cppPointerType.h"
+#include "cppEnumType.h"
 #include "cppConstType.h"
 #include "cppArrayType.h"
 #include "cppPreprocessor.h"
diff --git a/dtool/src/cppparser/cppInstanceIdentifier.cxx b/dtool/src/cppparser/cppInstanceIdentifier.cxx
index 052b1067ed..96f14e27ce 100644
--- a/dtool/src/cppparser/cppInstanceIdentifier.cxx
+++ b/dtool/src/cppparser/cppInstanceIdentifier.cxx
@@ -17,6 +17,7 @@
 #include "cppArrayType.h"
 #include "cppConstType.h"
 #include "cppFunctionType.h"
+#include "cppSimpleType.h"
 #include "cppParameterList.h"
 #include "cppIdentifier.h"
 
diff --git a/dtool/src/cppparser/cppScope.cxx b/dtool/src/cppparser/cppScope.cxx
index 54bc80fe2a..158c3884d2 100644
--- a/dtool/src/cppparser/cppScope.cxx
+++ b/dtool/src/cppparser/cppScope.cxx
@@ -26,6 +26,7 @@
 #include "cppPreprocessor.h"
 #include "cppTemplateScope.h"
 #include "cppClassTemplateParameter.h"
+#include "cppConstType.h"
 #include "cppFunctionType.h"
 #include "cppUsing.h"
 #include "cppBisonDefs.h"