1 files changed, 4 insertions, 2 deletions

diff --git a/isa/checker.cpp b/isa/checker.cpp
index 7bca5c9..770d9d6 100644
--- a/isa/checker.cpp
+++ b/isa/checker.cpp
@@ -17,8 +17,10 @@ void checker::execute() {
 
     if (inst.need_indirect_load) {
         auto addr = mem.fetch(inst.init_address.value());
-        if (inst.need_autoinc_store)
-            mem.store(*inst.init_address, (addr + 1) & 07777);
+        if (inst.need_autoinc_store) {
+            addr = (addr + 1) & 07777;
+            mem.store(*inst.init_address, addr);
+        }
         inst.final_address = addr;
     } else {
         assert(!inst.need_autoinc_store);