diff --git a/runtime/lib/isolate.cc b/runtime/lib/isolate.cc
index 2075d8b3ed5..577911646d0 100644
--- a/runtime/lib/isolate.cc
+++ b/runtime/lib/isolate.cc
@@ -1116,11 +1116,8 @@ DEFINE_NATIVE_ENTRY(Isolate_registerKernelBlob, 0, 1) {
                                arguments->NativeArgAt(0));
   auto register_kernel_blob_callback = Isolate::RegisterKernelBlobCallback();
   if (register_kernel_blob_callback == nullptr) {
-    const auto& error =
-        String::Handle(zone, String::New("Registration of kernel blobs is not "
-                                         "supported by this Dart embedder.\n"));
-    Exceptions::ThrowArgumentError(error);
-    UNREACHABLE();
+    Exceptions::ThrowUnsupportedError(
+        "Registration of kernel blobs is not supported by this Dart embedder.");
   }
   bool is_kernel = false;
   {
@@ -1143,10 +1140,7 @@ DEFINE_NATIVE_ENTRY(Isolate_registerKernelBlob, 0, 1) {
         kernel_blob.LengthInBytes());
   }
   if (uri == nullptr) {
-    const Instance& exception = Instance::Handle(
-        thread->isolate_group()->object_store()->out_of_memory());
-    Exceptions::Throw(thread, exception);
-    UNREACHABLE();
+    Exceptions::ThrowOOM();
   }
   return String::New(uri);
 }
@@ -1157,11 +1151,8 @@ DEFINE_NATIVE_ENTRY(Isolate_unregisterKernelBlob, 0, 1) {
   auto unregister_kernel_blob_callback =
       Isolate::UnregisterKernelBlobCallback();
   if (unregister_kernel_blob_callback == nullptr) {
-    const auto& error =
-        String::Handle(zone, String::New("Registration of kernel blobs is not "
-                                         "supported by this Dart embedder.\n"));
-    Exceptions::ThrowArgumentError(error);
-    UNREACHABLE();
+    Exceptions::ThrowUnsupportedError(
+        "Registration of kernel blobs is not supported by this Dart embedder.");
   }
   unregister_kernel_blob_callback(kernel_blob_uri.ToCString());
   return Object::null();
diff --git a/runtime/vm/runtime_entry.cc b/runtime/vm/runtime_entry.cc
index 797e265672f..caeae9bfeac 100644
--- a/runtime/vm/runtime_entry.cc
+++ b/runtime/vm/runtime_entry.cc
@@ -356,9 +356,7 @@ DEFINE_RUNTIME_ENTRY(AllocateArray, 2) {
                                 Array::kMaxElements);
   }
   if (len > Array::kMaxElements) {
-    const Instance& exception = Instance::Handle(
-        zone, thread->isolate_group()->object_store()->out_of_memory());
-    Exceptions::Throw(thread, exception);
+    Exceptions::ThrowOOM();
   }
 
   const Array& array = Array::Handle(
@@ -432,9 +430,7 @@ DEFINE_RUNTIME_ENTRY(AllocateTypedData, 2) {
   if (len < 0) {
     Exceptions::ThrowRangeError("length", Integer::Cast(length), 0, max);
   } else if (len > max) {
-    const Instance& exception = Instance::Handle(
-        zone, thread->isolate_group()->object_store()->out_of_memory());
-    Exceptions::Throw(thread, exception);
+    Exceptions::ThrowOOM();
   }
   const auto& typed_data =
       TypedData::Handle(zone, TypedData::New(cid, static_cast<intptr_t>(len)));