diff --git a/doc/gtkdoc.sh b/doc/gtkdoc.sh
index 5ad2e83..62628cc 100755
--- a/doc/gtkdoc.sh
+++ b/doc/gtkdoc.sh
@@ -44,8 +44,8 @@ TOUCH="touch"
 #debug
 _debug()
 {
-	echo $@ 1>&2
-	$@
+	echo "$@" 1>&2
+	"$@"
 }