diff --git a/dlls/rpcrt4/ndr_stubless.c b/dlls/rpcrt4/ndr_stubless.c
index 030bfb3be9..c9d993073a 100644
--- a/dlls/rpcrt4/ndr_stubless.c
+++ b/dlls/rpcrt4/ndr_stubless.c
@@ -1077,10 +1077,10 @@ __ASM_GLOBAL_FUNC( call_server_func,
                    "movq 8(%rsp),%rdx\n\t"
                    "movq 16(%rsp),%r8\n\t"
                    "movq 24(%rsp),%r9\n\t"
-                   "movq %rcx,%xmm0\n\t"
-                   "movq %rdx,%xmm1\n\t"
-                   "movq %r8,%xmm2\n\t"
-                   "movq %r9,%xmm3\n\t"
+                   "movq 0(%rsp),%xmm0\n\t"
+                   "movq 8(%rsp),%xmm1\n\t"
+                   "movq 16(%rsp),%xmm2\n\t"
+                   "movq 24(%rsp),%xmm3\n\t"
                    "callq *%rax\n\t"
                    "leaq -16(%rbp),%rsp\n\t"  /* restore stack */
                    "popq %rdi\n\t"