diff --git a/tests/Image/ImageUtilsTest.cpp b/tests/Image/ImageUtilsTest.cpp
index 9f55e10..b1661fa 100644
--- a/tests/Image/ImageUtilsTest.cpp
+++ b/tests/Image/ImageUtilsTest.cpp
@@ -25,9 +25,9 @@ int main(int argc, char** argv)
     ASSERT_EQUALS(black, 0.0, "%f", "%f");
 
     float other = Image::ImageUtils::lightnessFromRgb(125, 125, 125);
-    ASSERT_EQUALS__DELTA(other, 0.524, 0.001, "%f", "%f");
+    ASSERT_EQUALS_WITH_DELTA(other, 0.524, 0.001, "%f", "%f");
 
     printf("\n\n");
 
     return 0;
-}
\ No newline at end of file
+}