diff --git a/dlls/rpcrt4/rpc_binding.c b/dlls/rpcrt4/rpc_binding.c
index 71ebaa6ebd9..58e5eefbbfc 100644
--- a/dlls/rpcrt4/rpc_binding.c
+++ b/dlls/rpcrt4/rpc_binding.c
@@ -1040,3 +1040,12 @@ RpcBindingSetAuthInfoW( RPC_BINDING_HANDLE Binding, unsigned short *ServerPrincN
           AuthnLevel, AuthnSvc, AuthIdentity, AuthzSvr);
     return RPC_S_OK;
 }
+
+/***********************************************************************
+ *             RpcBindingSetOption (RPCRT4.@)
+ */
+RPC_STATUS WINAPI RpcBindingSetOption(RPC_BINDING_HANDLE BindingHandle, ULONG Option, ULONG OptionValue)
+{
+    FIXME("(%p, %ld, %ld): stub\n", BindingHandle, Option, OptionValue);
+    return RPC_S_OK;
+}
diff --git a/dlls/rpcrt4/rpcrt4.spec b/dlls/rpcrt4/rpcrt4.spec
index ea84ba0a738..8034f22566f 100644
--- a/dlls/rpcrt4/rpcrt4.spec
+++ b/dlls/rpcrt4/rpcrt4.spec
@@ -390,7 +390,7 @@
 @ stdcall RpcBindingSetAuthInfoExW(ptr wstr long long ptr long ptr)
 @ stdcall RpcBindingSetAuthInfoW(ptr wstr long long ptr long)
 @ stdcall RpcBindingSetObject(ptr ptr)
-@ stub RpcBindingSetOption
+@ stdcall RpcBindingSetOption(ptr long long)
 @ stdcall RpcBindingToStringBindingA(ptr ptr)
 @ stdcall RpcBindingToStringBindingW(ptr ptr)
 @ stdcall RpcBindingVectorFree(ptr)