diff --git a/cpu/decoder.cpp b/cpu/decoder.cpp
index 04b077d..cbc9b6b 100644
--- a/cpu/decoder.cpp
+++ b/cpu/decoder.cpp
@@ -432,7 +432,7 @@ void Cpu::executeInstruction()
           break;
         case 0xD9: // RETI
           doRet();
-          state.IME = IME_SCHEDULED;
+          state.IME = IME_ON;
           mcycles = 4;
           break;
         case 0xF3: // DI