diff --git a/bin/git-pull-request b/bin/git-pull-request
index 3e52a0e..5787da1 100755
--- a/bin/git-pull-request
+++ b/bin/git-pull-request
@@ -72,7 +72,7 @@ echo
 
 if [ -z "$base" ]
 then
-    base="master"
+    base="$(git_extra_default_branch)"
 fi
 
 body=$(json "$title" "$body" "$branch" "$base")
@@ -82,4 +82,4 @@ curl \
 		-H "Accept: application/vnd.github.v3+json" \
 		-H "Authorization: token $github_personal_access_token" \
 		-H "X-GitHub-OTP: $mfa_code" \
-    "https://api.github.com/repos/$project/pulls" -d "$body"
\ No newline at end of file
+    "https://api.github.com/repos/$project/pulls" -d "$body"