diff --git a/gitwatch.sh b/gitwatch.sh
index e0c14e3..7f13469 100755
--- a/gitwatch.sh
+++ b/gitwatch.sh
@@ -120,7 +120,7 @@ cleanup () {
 
 # Tests for the availability of a command
 is_command () {
-	which "$1" &>/dev/null
+	hash "$1" 2>/dev/null
 }
 
 ###############################################################################