diff --git a/init.g b/init.g
index 1f36446..1f9bfb3 100644
--- a/init.g
+++ b/init.g
@@ -11,6 +11,9 @@ fi;
 if not IsBound( IsMatrixOrMatrixObj ) then 
     BindGlobal( "IsMatrixOrMatrixObj", IsMatrix ); 
 fi; 
+if not IsBound( MutableCopyMatrix ) then 
+    BindGlobal( "MutableCopyMatrix", ShallowCopy ); 
+fi; 
 
 ##  read the function declarations