diff --git a/src/v8_typed_array.cc b/src/v8_typed_array.cc
index 41211c901e2..f5503a90d5c 100644
--- a/src/v8_typed_array.cc
+++ b/src/v8_typed_array.cc
@@ -829,6 +829,7 @@ int SizeOfArrayElementForType(v8::ExternalArrayType type) {
   switch (type) {
     case v8::kExternalByteArray:
     case v8::kExternalUnsignedByteArray:
+    case v8::kExternalPixelArray:
       return 1;
     case v8::kExternalShortArray:
     case v8::kExternalUnsignedShortArray: