diff --git a/src/zen/tabs/ZenPinnedTabManager.mjs b/src/zen/tabs/ZenPinnedTabManager.mjs
index a60f52c4c..e8d84a1ef 100644
--- a/src/zen/tabs/ZenPinnedTabManager.mjs
+++ b/src/zen/tabs/ZenPinnedTabManager.mjs
@@ -356,7 +356,7 @@ class nsZenPinnedTabManager extends nsZenDOMOperatedFeature {
         alwaysUnload &&
         ["close", "reset", "switch", "reset-switch"].includes(behavior)
       ) {
-        behavior = behavior.contains("reset")
+        behavior = behavior.includes("reset")
           ? "reset-unload-switch"
           : "unload-switch";
       }