diff --git a/widget/android/GfxInfo.cpp b/widget/android/GfxInfo.cpp
index 4cf4e525a8a1..2354b952384f 100644
--- a/widget/android/GfxInfo.cpp
+++ b/widget/android/GfxInfo.cpp
@@ -595,8 +595,10 @@ nsresult GfxInfo::GetFeatureStatusImpl(
     }
 
     if (aFeature == FEATURE_WEBRENDER_SCISSORED_CACHE_CLEARS) {
-      const bool isMali = false;  // TODO
-      if (isMali) {
+      // Mali-G71 and G72 (and presumably others) are buggy when attempting
+      // to clear picture cache textures with a scissor rect set.
+      const bool isMaliGxx = mGLStrings->Renderer().Find("Mali-G", /*ignoreCase*/ true) >= 0;
+      if (isMaliGxx) {
         *aStatus = nsIGfxInfo::FEATURE_BLOCKED_DEVICE;
         aFailureId = "FEATURE_FAILURE_BUG_1603515";
       } else {