diff --git a/src/ppc/code-stubs-ppc.cc b/src/ppc/code-stubs-ppc.cc
index 027b7d7d8c..2fe527992b 100644
--- a/src/ppc/code-stubs-ppc.cc
+++ b/src/ppc/code-stubs-ppc.cc
@@ -32,11 +32,6 @@ void ArrayNArgumentsConstructorStub::Generate(MacroAssembler* masm) {
   __ TailCallRuntime(Runtime::kNewArray);
 }
 
-void FastArrayPushStub::InitializeDescriptor(CodeStubDescriptor* descriptor) {
-  Address deopt_handler = Runtime::FunctionForId(Runtime::kArrayPush)->entry;
-  descriptor->Initialize(r3, deopt_handler, -1, JS_FUNCTION_STUB_MODE);
-}
-
 void FastFunctionBindStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   Address deopt_handler = Runtime::FunctionForId(Runtime::kFunctionBind)->entry;
diff --git a/src/s390/code-stubs-s390.cc b/src/s390/code-stubs-s390.cc
index 2f8d10badb..b902feff0f 100644
--- a/src/s390/code-stubs-s390.cc
+++ b/src/s390/code-stubs-s390.cc
@@ -32,11 +32,6 @@ void ArrayNArgumentsConstructorStub::Generate(MacroAssembler* masm) {
   __ TailCallRuntime(Runtime::kNewArray);
 }
 
-void FastArrayPushStub::InitializeDescriptor(CodeStubDescriptor* descriptor) {
-  Address deopt_handler = Runtime::FunctionForId(Runtime::kArrayPush)->entry;
-  descriptor->Initialize(r2, deopt_handler, -1, JS_FUNCTION_STUB_MODE);
-}
-
 void FastFunctionBindStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   Address deopt_handler = Runtime::FunctionForId(Runtime::kFunctionBind)->entry;