Replace gitflow_check_ prefixes by gitflow_require_ prefixes, for consistency.
diff --git a/git-flow b/git-flow
index 6923f96..5fbbf8c 100755
--- a/git-flow
+++ b/git-flow
@@ -83,7 +83,7 @@
 	cmd_$SUBACTION "$@"
 }
 
-gitflow_check_clean_working_tree() {
+gitflow_require_clean_working_tree() {
 	if ! git diff --no-ext-diff --ignore-submodules --quiet --exit-code; then
 		die "Working tree contains unstaged changes. Aborting ..."
 	fi
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
diff --git a/git-flow-hotfix b/git-flow-hotfix
index 7cc1c77..e4ada19 100644
--- a/git-flow-hotfix
+++ b/git-flow-hotfix
@@ -63,7 +63,7 @@
 	parse_args "$@"
 
 	# sanity checks
-	gitflow_check_clean_working_tree
+	gitflow_require_clean_working_tree
 	git fetch -q $ORIGIN
 	gitflow_require_branches_equal $MASTER_BRANCH $ORIGIN/$MASTER_BRANCH
 	gitflow_require_branch_absent $BRANCH
@@ -89,7 +89,7 @@
 	parse_args "$@"
 
 	# sanity checks
-	gitflow_check_clean_working_tree
+	gitflow_require_clean_working_tree
 	git fetch -q $ORIGIN $MASTER_BRANCH
 	git fetch -q $ORIGIN $DEVELOP_BRANCH
 	gitflow_require_branches_equal $MASTER_BRANCH $ORIGIN/$MASTER_BRANCH
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 $ORIGIN
diff --git a/git-flow-release b/git-flow-release
index cc861a9..7a102d1 100644
--- a/git-flow-release
+++ b/git-flow-release
@@ -64,7 +64,7 @@
 	parse_args "$@"
 
 	# sanity checks
-	gitflow_check_clean_working_tree
+	gitflow_require_clean_working_tree
 	git fetch -q $ORIGIN
 	gitflow_require_branches_equal $DEVELOP_BRANCH $ORIGIN/$DEVELOP_BRANCH
 	gitflow_require_branch_absent $BRANCH
@@ -90,7 +90,7 @@
 	parse_args "$@"
 
 	# sanity checks
-	gitflow_check_clean_working_tree
+	gitflow_require_clean_working_tree
 	git fetch -q $ORIGIN
 	gitflow_require_branches_equal $MASTER_BRANCH $ORIGIN/$MASTER_BRANCH
 	gitflow_require_branches_equal $DEVELOP_BRANCH $ORIGIN/$DEVELOP_BRANCH
diff --git a/git-flow-support b/git-flow-support
index a36b956..a89b05f 100644
--- a/git-flow-support
+++ b/git-flow-support
@@ -53,7 +53,7 @@
 	parse_args "$@"
 
 	# sanity checks
-	gitflow_check_clean_working_tree
+	gitflow_require_clean_working_tree
 
 	# create branch
 	git checkout -b $BRANCH $BASE