diff --git a/src/IVtkDraw/IVtkDraw_Interactor.hxx b/src/IVtkDraw/IVtkDraw_Interactor.hxx
index 547e877e3c..f81d659d3b 100644
--- a/src/IVtkDraw/IVtkDraw_Interactor.hxx
+++ b/src/IVtkDraw/IVtkDraw_Interactor.hxx
@@ -26,7 +26,7 @@
 #include <X11/X.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
-#include <tk.h>
+#include <tcl.h>
 #endif
 
 // prevent disabling some MSVC warning messages by VTK headers