diff --git a/lib/mc.sh.in b/lib/mc.sh.in
index 31ad885df..064717ccf 100644
--- a/lib/mc.sh.in
+++ b/lib/mc.sh.in
@@ -9,4 +9,6 @@ mc ()
         unset MC;
 }
 
-export -f mc
+if test -n "$BASH_VERSION"; then
+	export -f mc
+fi