diff --git a/README.adoc b/README.adoc
index 5a63eee..d266ab7 100644
--- a/README.adoc
+++ b/README.adoc
@@ -11327,7 +11327,7 @@ vbar_el1 0x40000800
 lkmc_vector_trap_handler
 exc_type 0x11
 exc_type is LKMC_VECTOR_SYNC_SPX
-ESR 0x56000000
+ESR 0x56000042
 SP 0x4200bba8
 ELR 0x40002470
 SPSR 0x600003c5
diff --git a/baremetal/arch/aarch64/svc.c b/baremetal/arch/aarch64/svc.c
index a339a28..9ccd632 100644
--- a/baremetal/arch/aarch64/svc.c
+++ b/baremetal/arch/aarch64/svc.c
@@ -58,7 +58,7 @@ int main(void) {
     printf("spsel 0x%" PRIx32 "\n", lkmc_sysreg_spsel_read());
     printf("vbar_el1 0x%" PRIx64 "\n", lkmc_sysreg_vbar_el1_read());
     lkmc_assert(myvar == 0);
-    LKMC_SVC(0);
+    LKMC_SVC(0x42);
     lkmc_assert(myvar == 1);
     return 0;
 }