diff --git a/src/execute.c b/src/execute.c
index 2d60bef..180487e 100644
--- a/src/execute.c
+++ b/src/execute.c
@@ -378,7 +378,6 @@ void execute_SDT(Machine *state, a64inst_instruction *inst) {
                 state->registers[inst->data.SingleTransferData.processOpData.singleDataTransferData.base] = address;
                 break;
             case a64inst_POST_INDEXED:
-                state->registers[inst->data.SingleTransferData.processOpData.singleDataTransferData.base] = address + inst->data.SingleTransferData.processOpData.singleDataTransferData.a64inst_addressingModeData.indexedOffset;
                 break;
         }
     }
@@ -396,7 +395,7 @@ void execute_SDT(Machine *state, a64inst_instruction *inst) {
          // Update base register if post indexed
         if (inst->data.SingleTransferData.processOpData.singleDataTransferData.addressingMode == a64inst_POST_INDEXED) {
             dword result = address + signExtend(inst->data.SingleTransferData.processOpData.singleDataTransferData.a64inst_addressingModeData.indexedOffset, 9);
-            writeRegister(state, inst->data.SingleTransferData.processOpData.singleDataTransferData.base, inst->data.SingleTransferData.regType == a64inst_W, result);
+            writeRegister(state, inst->data.SingleTransferData.processOpData.singleDataTransferData.base, inst->data.SingleTransferData.regType, result);
         }
     }