diff --git a/code/qcommon/vm_x86_64.c b/code/qcommon/vm_x86_64.c
index bc79bfa4..70ee7a29 100644
--- a/code/qcommon/vm_x86_64.c
+++ b/code/qcommon/vm_x86_64.c
@@ -757,12 +757,14 @@ emit_do_syscall:
 				emit("push %%r8");
 				emit("push %%r9");
 				emit("push %%r10");
+				emit("push %%r10");
 				emit("movl 4(%%rsi), %%edi");  // 1st argument dest
 				emit("movl 8(%%rsi), %%esi");  // 2nd argument src
 				emit("movl $%d, %%edx", iarg); // 3rd argument count
 				emit("movq $%"PRIu64", %%rax", (uint64_t)block_copy_vm);
 				emit("callq *%%rax");
 				emit("pop %%r10");
+				emit("pop %%r10");
 				emit("pop %%r9");
 				emit("pop %%r8");
 				emit("pop %%rdi");