diff --git a/libraries/libmesosphere/source/arch/arm64/svc/kern_svc_exception_asm.s b/libraries/libmesosphere/source/arch/arm64/svc/kern_svc_exception_asm.s
index b6caa3799..ef65fafb6 100644
--- a/libraries/libmesosphere/source/arch/arm64/svc/kern_svc_exception_asm.s
+++ b/libraries/libmesosphere/source/arch/arm64/svc/kern_svc_exception_asm.s
@@ -92,7 +92,7 @@ _ZN3ams4kern3svc14RestoreContextEm:
 
     #if defined(MESOSPHERE_ENABLE_HARDWARE_SINGLE_STEP)
     /* Since we're returning from an exception, set SPSR.SS so that we advance an instruction if single-stepping. */
-    orr x22, x22, #(1 << 21)
+    orr x10, x10, #(1 << 21)
     #endif
 
     msr     sp_el0, x8