diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index f0c35d1..6ebff31 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -4833,8 +4833,8 @@
         sourceCrop.set(dispScissor);
         // adb shell screencap will default reqWidth and reqHeight to zeros.
         if (reqWidth == 0 || reqHeight == 0) {
-            reqWidth = uint32_t(dispScissor.width());
-            reqHeight = uint32_t(dispScissor.height());
+            reqWidth = uint32_t(device->getViewport().width());
+            reqHeight = uint32_t(device->getViewport().height());
         }
     }