diff --git a/srcpkgs/strace/patches/aarch64.patch b/srcpkgs/strace/patches/aarch64.patch
index 395372c53fa..da2d6fddb29 100644
--- a/srcpkgs/strace/patches/aarch64.patch
+++ b/srcpkgs/strace/patches/aarch64.patch
@@ -1,11 +1,13 @@
 --- sigreturn.c
 +++ sigreturn.c
-@@ -12,6 +12,8 @@
+@@ -12,6 +12,10 @@
  #elif NSIG < 32
  # error NSIG < 32
  #endif
++#ifdef __arch64__
 +extern uint64_t *const aarch64_sp_ptr;
 +extern uint32_t *const arm_sp_ptr;
++#endif
  
  int
  sys_sigreturn(struct tcb *tcp)