diff --git a/libraries/AP_Math/vector2.h b/libraries/AP_Math/vector2.h
index 4fe2932068..b1ceadbd4a 100644
--- a/libraries/AP_Math/vector2.h
+++ b/libraries/AP_Math/vector2.h
@@ -30,9 +30,6 @@
 #pragma once
 
 #include <cmath>
-#if MATH_CHECK_INDEXES
-#include <assert.h>
-#endif
 
 template <typename T>
 struct Vector2