diff --git a/dtool/src/interrogatedb/vector_int.h b/dtool/src/interrogatedb/vector_int.h
index 1600cf55fc..d1d2993182 100644
--- a/dtool/src/interrogatedb/vector_int.h
+++ b/dtool/src/interrogatedb/vector_int.h
@@ -19,9 +19,7 @@
 #ifndef VECTOR_INT_H
 #define VECTOR_INT_H
 
-#include <dtoolbase.h>
-
-#include <vector>
+#include "dtoolbase.h"
 
 ////////////////////////////////////////////////////////////////////
 //       Class : vector_int
@@ -37,7 +35,7 @@
 #define TYPE int
 #define NAME vector_int
 
-#include <vector_src.h>
+#include "vector_src.h"
 
 // Tell GCC that we'll take care of the instantiation explicitly here.
 #ifdef __GNUC__