diff --git a/tests/MathTest.cpp b/tests/MathTest.cpp
index dec93de..4bfbd94 100644
--- a/tests/MathTest.cpp
+++ b/tests/MathTest.cpp
@@ -1,4 +1,5 @@
 #include "Test.h"
+#include "SkFloatingPoint.h"
 #include "SkPoint.h"
 #include "SkRandom.h"