diff --git a/Harmonograph/presets/blackonwhite.json b/Harmonograph/presets/blackonwhite.json
index fa931f2..6c07396 100644
--- a/Harmonograph/presets/blackonwhite.json
+++ b/Harmonograph/presets/blackonwhite.json
@@ -15,14 +15,14 @@
             "friction": 0.0005
         },
         {
-            "amplitude": { "x": .5, "y": .5 },
+            "amplitude": { "x":0 .5, "y": 0.5 },
             "period": 1.001,
             "friction": 0.0005
         },
         {
-            "amplitude": { "x": -.5, "y": .5 },
+            "amplitude": { "x": -0.5, "y": 0.5 },
             "period": 2.999,
             "friction": 0.0005
         }
     ]
-}
\ No newline at end of file
+}