diff --git a/samplecode/SampleCCPRGeometry.cpp b/samplecode/SampleCCPRGeometry.cpp
index f234951..426962a 100644
--- a/samplecode/SampleCCPRGeometry.cpp
+++ b/samplecode/SampleCCPRGeometry.cpp
@@ -182,8 +182,11 @@
 
         GrOpMemoryPool* pool = ctx->contextPriv().opMemoryPool();
 
+        const GrBackendFormat format =
+                ctx->contextPriv().caps()->getBackendFormatFromGrColorType(GrColorType::kAlpha_F16,
+                                                                           GrSRGBEncoded::kNo);
         sk_sp<GrRenderTargetContext> ccbuff =
-                ctx->contextPriv().makeDeferredRenderTargetContext(SkBackingFit::kApprox,
+                ctx->contextPriv().makeDeferredRenderTargetContext(format, SkBackingFit::kApprox,
                                                                    this->width(), this->height(),
                                                                    kAlpha_half_GrPixelConfig,
                                                                    nullptr);