diff --git a/src/api/main/java/co/aikar/timings/ThreadAssertion.java b/src/api/main/java/co/aikar/timings/ThreadAssertion.java
index c0e501e8a..adc4c5efc 100644
--- a/src/api/main/java/co/aikar/timings/ThreadAssertion.java
+++ b/src/api/main/java/co/aikar/timings/ThreadAssertion.java
@@ -8,10 +8,10 @@ public class ThreadAssertion {
     }
     
     static void start() {
-        mainThread = false;
+        mainThread = true;
     }
     
     public static void close() {
         mainThread = false;
     }
-}
\ No newline at end of file
+}