diff --git a/src/rt/arch/x86_64/record_sp.S b/src/rt/arch/x86_64/record_sp.S
index 3df6ee1c5da..e8284c5fac9 100644
--- a/src/rt/arch/x86_64/record_sp.S
+++ b/src/rt/arch/x86_64/record_sp.S
@@ -13,6 +13,13 @@ RECORD_SP:
 	movq %rdi, %fs:112
 	ret
 #else
+#if defined(__APPLE__)
+RECORD_SP:
+	movq $0x60+90*8, %rsi
+	movq %rdi, %gs:(%rsi)
+	ret
+#else
 RECORD_SP:
 	ret
-#endif
\ No newline at end of file
+#endif
+#endif