diff --git a/gm/texdata.cpp b/gm/texdata.cpp
index 09721ac..724b4ec 100644
--- a/gm/texdata.cpp
+++ b/gm/texdata.cpp
@@ -112,9 +112,12 @@
                 ctx->setMatrix(vm);
                 GrMatrix tm;
                 tm = vm;
-                tm.postIDiv(2*S, 2*S);
-                paint.colorSampler(0)->setCustomStage(SkNEW_ARGS(GrSingleTextureEffect,
-                                                                 (texture)), tm)->unref();
+                GrMatrix* sampleMat = paint.colorSampler(0)->matrix();
+                *sampleMat = vm;
+                sampleMat->postIDiv(2*S, 2*S);
+                paint.colorSampler(0)->setCustomStage(
+                    SkNEW_ARGS(GrSingleTextureEffect, (texture)))->unref();
+
 
                 ctx->drawRect(paint, GrRect::MakeWH(2*S, 2*S));