arm_compute v18.11
diff --git a/src/runtime/CL/functions/CLEqualizeHistogram.cpp b/src/runtime/CL/functions/CLEqualizeHistogram.cpp
index 45f70d2..a0663b7 100644
--- a/src/runtime/CL/functions/CLEqualizeHistogram.cpp
+++ b/src/runtime/CL/functions/CLEqualizeHistogram.cpp
@@ -68,7 +68,7 @@
     }
     else
     {
-        const float diff = image_size - 1;
+        const float diff = image_size - num_lowest_pixels;
 
         for(size_t i = 0; i < 256; ++i)
         {