diff --git a/bin/git-fork b/bin/git-fork
index b3e4098..a1d93ca 100755
--- a/bin/git-fork
+++ b/bin/git-fork
@@ -5,8 +5,12 @@ abort() {
   exit 1
 }
 
+url="$1"
+
+test -z "$url" && url=`git remote get-url origin 2> /dev/null`
+
 # validate repo url
-test -z "$1" && abort "github repo needs to be specified as an argument"
+test -z "$url" && abort "github repo needs to be specified as an argument"
 
 # validate user
 echo "Enter your github username"
@@ -14,8 +18,8 @@ read user
 [ "$user" = 'n' ] && abort "git username required"
 
 # extract owner + project from repo url
-project=${1##*/}
-owner=${1%/$project}
+project=${url##*/}
+owner=${url%/$project}
 [[ $project == *.git ]] && project=${project%.git}
 if [[ $owner == git@* ]]; then
   owner=${owner##*:}