Replace gitflow_check_ prefixes by gitflow_require_ prefixes, for consistency.
diff --git a/git-flow-init b/git-flow-init
index 7b1b4b6..c2e75b2 100644
--- a/git-flow-init
+++ b/git-flow-init
@@ -40,7 +40,7 @@
 		die "Cannot find your master branch. Try: git branch -m <mymaster> $MASTER_BRANCH"
 	fi
 
-	gitflow_check_clean_working_tree
+	gitflow_require_clean_working_tree
 
 	if git remote | grep -q $ORIGIN; then
 		git fetch -q $ORIGIN