diff --git a/EGkIntervals.h b/EGkIntervals.h
index e97848e..6d3ff39 100644
--- a/EGkIntervals.h
+++ b/EGkIntervals.h
@@ -38,6 +38,7 @@ class Intervals
       EGK_EXPORT void Set( double dMin, double dMax) ;
       EGK_EXPORT void Add( double dMin, double dMax) ;
       EGK_EXPORT void Subtract( double dMin, double dMax) ;
+      EGK_EXPORT void Intersect( double dMin, double dMax) ;
       EGK_EXPORT void Add( const Intervals& Other) ;
       EGK_EXPORT void Subtract( const Intervals& Other) ;
       EGK_EXPORT void Intersect( const Intervals& Other) ;