diff --git a/panda/src/parametrics/curve.h b/panda/src/parametrics/curve.h
index 4ddbb9a716..68407b0b16 100644
--- a/panda/src/parametrics/curve.h
+++ b/panda/src/parametrics/curve.h
@@ -24,7 +24,6 @@
 #include <typedef.h>
 #include <list>
 #include <vector>
-using namespace std;
 
 #include "typedWriteableReferenceCount.h"
 #include "namable.h"
diff --git a/panda/src/parametrics/curveFitter.h b/panda/src/parametrics/curveFitter.h
index 32d18ec56e..086b113cd0 100644
--- a/panda/src/parametrics/curveFitter.h
+++ b/panda/src/parametrics/curveFitter.h
@@ -15,13 +15,13 @@
 #ifndef CURVEFITTER_H
 #define CURVEFITTER_H
 
+#include <pandabase.h>
+
 #include <typedef.h>
 ////#include <linMathOutput.h>
 #include "luse.h"
 #include <vector>
 ////#include <Performer/pr/pfLinMath.h>
-#include <iostream>
-using namespace std;
 
 class HermiteCurve;
 class NurbsCurve;