diff --git a/tests/GLProgramsTest.cpp b/tests/GLProgramsTest.cpp
index 4d0772c..ae6fe7b 100644
--- a/tests/GLProgramsTest.cpp
+++ b/tests/GLProgramsTest.cpp
@@ -44,7 +44,7 @@
              kAttribute_ColorInput == fCoverageInput);
     fCoverageAttributeIndex = (fCoverageInput == kAttribute_ColorInput) ? currAttribIndex++ : -1;
 
-    fColorFilterXfermode = random->nextULessThan(SkXfermode::kCoeffModesCnt);
+    fColorFilterXfermode = random->nextULessThan(SkXfermode::kLastCoeffMode + 1);
 
     fFirstCoverageStage = random->nextULessThan(GrDrawState::kNumStages);