diff --git a/src/ExecutorCases.cpp b/src/ExecutorCases.cpp
index 1338584..1e06b54 100644
--- a/src/ExecutorCases.cpp
+++ b/src/ExecutorCases.cpp
@@ -52,6 +52,15 @@ namespace executor_cases {
       cc.m_Bus->WriteX<uint32_t>(dstAddress, result);
       break;
     }
+    case x86::ModRMState::DISP32:
+    {
+      uint32_t dstAddress = cc.m_Instruction.m_Operand1;
+      uint32_t dstPrevValue = cc.m_Bus->AccessX<uint32_t>(dstAddress);
+      uint32_t currRegValue = cc.m_Registers[modrm.m_Reg];
+      uint32_t result = dstPrevValue + currRegValue;
+      cc.m_Bus->WriteX<uint32_t>(dstAddress, result);
+      break;
+    }
     default:
     {
       throw std::runtime_error("Invalid ModRM State encountered during Add_rm32_r32");
diff --git a/src/Instruction.cpp b/src/Instruction.cpp
index 0dd8ee4..ff7a7e7 100644
--- a/src/Instruction.cpp
+++ b/src/Instruction.cpp
@@ -31,7 +31,7 @@ namespace x86 {
     switch(mod) {
     case 0b00000000:
       state = ModRMState::LR;
-      if(reg == 0b00000101)
+      if(rm == 0b00000101)
 	state = ModRMState::DISP32;
       break;
     case 0b01000000:
diff --git a/src/main.cpp b/src/main.cpp
index 90d8341..5d52a7a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -8,7 +8,7 @@
 uint8_t test[] = {
   0xB8, 0xF4, 0x00, 0x00, 0x00,
   0xB9, 0x00, 0x80, 0x00, 0x00,
-  0x01, 0x81, 0x10, 0x00, 0x00, 0x00,
+  0x01, 0x05, 0x10, 0x80, 0x00, 0x00,
   0x00,
 };