diff --git a/src/main/java/net/haesleinhuepf/clij2/plugins/CountNonZeroPixels.java b/src/main/java/net/haesleinhuepf/clij2/plugins/CountNonZeroPixels.java
index 97959301..420ba50a 100644
--- a/src/main/java/net/haesleinhuepf/clij2/plugins/CountNonZeroPixels.java
+++ b/src/main/java/net/haesleinhuepf/clij2/plugins/CountNonZeroPixels.java
@@ -72,7 +72,7 @@ public static double countNonZeroPixels(CLIJ2 clij2, ClearCLBuffer clImage) {
         Cursor cursor = Views.iterable(rai).cursor();
         long sum = 0;
         while (cursor.hasNext()) {
-            sum += ((RealType) cursor.next()).getRealFloat();
+            sum +=  (long) ((RealType) cursor.next()).getRealFloat();
         }
 
         if (clImage != clReducedImage) {