diff --git a/tools/linux_packaging/build b/tools/linux_packaging/build
index 0ee5d06ea2..37bd31371b 100755
--- a/tools/linux_packaging/build
+++ b/tools/linux_packaging/build
@@ -301,7 +301,7 @@ if test x$WITH_NLS != x ; then
 	LINGUAS=
 
         for pkg in gtk2_ardour libs/ardour libs/gtkmm2ext libs/tk/ytk ; do
-	    files=`find ../../$pkg -name "*.mo" \! -path "*/appdata/*"`
+	    files=`find ../../$pkg -not -path "*/appdata/*" -name "*.mo"`
 
             #
             # the package name is appended with a number so that
diff --git a/tools/osx_packaging/osx_build b/tools/osx_packaging/osx_build
index 11d18eb9d3..bfa37dff72 100755
--- a/tools/osx_packaging/osx_build
+++ b/tools/osx_packaging/osx_build
@@ -268,7 +268,7 @@ if test x$WITH_NLS != x ; then
 	LINGUAS=
 
 	for pkg in gtk2_ardour libs/ardour libs/gtkmm2ext lib/tk/ytk  ; do
-		files=`find ../../$pkg -name \! -path "*/appdata/*" "*.mo"`
+		files=`find ../../$pkg -not -path "*/appdata/*" -name "*.mo"`
 
 		#
 		# the package name is appended with a number so that