diff --git a/gm/gradient_matrix.cpp b/gm/gradient_matrix.cpp
index c1ff65e3d9..25e052c280 100644
--- a/gm/gradient_matrix.cpp
+++ b/gm/gradient_matrix.cpp
@@ -38,10 +38,10 @@ static const SkPoint linearPts[][2] = {
 };
 
 static const SkPoint radialPts[][2] = {
-    {{0,   0.5}, {1,   0.5}},
+    {{0,   0.5f}, {1,   0.5f}},
     {{0.5, 0  }, {0.5, 1  }},
-    {{1,   0.5}, {0,   0.5}},
-    {{0.5, 1  }, {0.5, 0  }},
+    {{1,   0.5f}, {0,   0.5f}},
+    {{0.5f, 1  }, {0.5f, 0  }},
 
     {{0, 0}, {1, 1}},
     {{1, 1}, {0, 0}},