diff --git a/InstructionSets/68k/Decoder.cpp b/InstructionSets/68k/Decoder.cpp
index 99104859c..7bbc1a333 100644
--- a/InstructionSets/68k/Decoder.cpp
+++ b/InstructionSets/68k/Decoder.cpp
@@ -175,6 +175,24 @@ template <uint8_t op, bool validate> Preinstruction Predecoder<model>::validated
 					return Preinstruction();
 			}
 
+			switch(original.mode<1>()) {
+				default: return original;
+
+				case AddressingMode::ImmediateData:
+				case AddressingMode::ProgramCounterIndirectWithDisplacement:
+				case AddressingMode::ProgramCounterIndirectWithIndex8bitDisplacement:
+				case AddressingMode::None:
+					return Preinstruction();
+			}
+
+		// MOVE.
+		case OpT(Operation::MOVEb):	case OpT(Operation::MOVEw):	case OpT(Operation::MOVEl):
+			switch(original.mode<0>()) {
+				default: break;
+				case AddressingMode::None:
+					return Preinstruction();
+			}
+
 			switch(original.mode<1>()) {
 				default: return original;
 
diff --git a/OSBindings/Mac/Clock SignalTests/m68kDecoderTests.mm b/OSBindings/Mac/Clock SignalTests/m68kDecoderTests.mm
index 7a9d539f9..9f310ef1d 100644
--- a/OSBindings/Mac/Clock SignalTests/m68kDecoderTests.mm	
+++ b/OSBindings/Mac/Clock SignalTests/m68kDecoderTests.mm	
@@ -112,6 +112,10 @@ template <int index> NSString *operand(Preinstruction instruction) {
 			case Operation::SUBXw:		instruction = @"SUBX.w";	break;
 			case Operation::SUBXl:		instruction = @"SUBX.l";	break;
 
+			case Operation::MOVEb:		instruction = @"MOVE.b";	break;
+			case Operation::MOVEw:		instruction = @"MOVE.w";	break;
+			case Operation::MOVEl:		instruction = @"MOVE.l";	break;
+
 			// For now, skip any unmapped operations.
 			default: continue;
 		}