diff --git a/docs/ispc.txt b/docs/ispc.txt
index 9a0ef58c..8bc559b4 100644
--- a/docs/ispc.txt
+++ b/docs/ispc.txt
@@ -1187,7 +1187,7 @@ This code implicitly assumes that ``programCount`` evenly divides
 ::
 
     for (uniform int i = 0; i < count; i += programCount) {
-        if (i + programIndex < programCount) {
+        if (i + programIndex < count) {
             float d = data[i + programIndex];
             ...