diff --git a/examples/BLOCKS/BlocksSynth/Source/WaveshapeProgram.h b/examples/BLOCKS/BlocksSynth/Source/WaveshapeProgram.h
index 4bd37e0f7b..41ba2042cd 100644
--- a/examples/BLOCKS/BlocksSynth/Source/WaveshapeProgram.h
+++ b/examples/BLOCKS/BlocksSynth/Source/WaveshapeProgram.h
@@ -80,7 +80,7 @@ public:
         }
 
         // Store the values for each of the waveshapes at the correct offsets in the shared data heap
-        for (int i = 0; i < 45; ++i)
+        for (uint8 i = 0; i < 45; ++i)
         {
             ledGrid.setDataByte (sineWaveOffset     + i, sineWaveY[i]);
             ledGrid.setDataByte (squareWaveOffset   + i, squareWaveY[i]);