diff --git a/README.md b/README.md
index 0c3d361..523169e 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ If a PR is opened with many commits, it will create a single build job
 for all of the detected packages. If a PR is opened and many commits
 are pushed one by one to the open PR, many build jobs will be created.
 
-To disable automatic building of packages on a PR, add `WIP` to the
+To disable automatic building of packages on a PR, add `[WIP]` to the
 PR's title, or the `2.status: work-in-progress` label.
 
 ## Commands
diff --git a/ofborg/src/tasks/massrebuilder.rs b/ofborg/src/tasks/massrebuilder.rs
index d06d470..71a2756 100644
--- a/ofborg/src/tasks/massrebuilder.rs
+++ b/ofborg/src/tasks/massrebuilder.rs
@@ -771,7 +771,11 @@ mod tests {
 }
 
 fn issue_is_wip(issue: &hubcaps::issues::Issue) -> bool {
-    if indicates_wip(&issue.title) {
+    if issue.title.contains("[WIP]") {
+        return true;
+    }
+
+    if issue.title.starts_with("WIP:") {
         return true;
     }
 
@@ -781,10 +785,6 @@ fn issue_is_wip(issue: &hubcaps::issues::Issue) -> bool {
 fn indicates_wip(text: &str) -> bool {
     let text = text.to_lowercase();
 
-    if text.contains("wip") {
-        return true;
-    }
-
     if text.contains("work in progress") {
         return true;
     }