diff --git a/opengl/tests/hwc/hwcTestLib.cpp b/opengl/tests/hwc/hwcTestLib.cpp
index b790c51..a468a92 100644
--- a/opengl/tests/hwc/hwcTestLib.cpp
+++ b/opengl/tests/hwc/hwcTestLib.cpp
@@ -719,7 +719,7 @@
             pixel = testRand();
         }
 
-        for (unsigned int y = 0; y <= height; y++) {
+        for (unsigned int y = 0; y < height; y++) {
             hwcTestSetPixel(gBuf, buf, x, y, pixel);
         }
     }