Replace gitflow_check_ prefixes by gitflow_require_ prefixes, for consistency.
diff --git a/git-flow-feature b/git-flow-feature
index c336b57..2a3e39d 100644
--- a/git-flow-feature
+++ b/git-flow-feature
@@ -69,7 +69,7 @@
 	parse_args "$@"
 
 	# sanity checks
-	gitflow_check_clean_working_tree
+	gitflow_require_clean_working_tree
 	gitflow_require_branch_absent $BRANCH
 	if [ "$BASE" = "$DEVELOP_BRANCH" ]; then
 		git fetch -q $ORIGIN $DEVELOP_BRANCH
@@ -94,7 +94,7 @@
 	parse_args "$@"
 
 	# sanity checks
-	gitflow_check_clean_working_tree
+	gitflow_require_clean_working_tree
 	gitflow_require_branch $BRANCH
 	git fetch -q $ORIGIN
 	if has $ORIGIN/$BRANCH $REMOTE_BRANCHES; then
@@ -130,7 +130,7 @@
 	parse_args "$@"
 
 	# sanity checks
-	gitflow_check_clean_working_tree
+	gitflow_require_clean_working_tree
 	gitflow_require_branch $BRANCH
 	git fetch -q $ORIGIN
 	gitflow_require_branch_absent $ORIGIN/$BRANCH
@@ -156,7 +156,7 @@
 	parse_args "$@"
 
 	# sanity checks
-	gitflow_check_clean_working_tree
+	gitflow_require_clean_working_tree
 	gitflow_require_branch_absent $BRANCH
 	git fetch -q $ORIGIN
 	gitflow_require_branch $ORIGIN/$BRANCH