diff --git a/InstructionSets/x86/Implementation/PerformImplementation.hpp b/InstructionSets/x86/Implementation/PerformImplementation.hpp
index d5ef63560..6c09d50ba 100644
--- a/InstructionSets/x86/Implementation/PerformImplementation.hpp
+++ b/InstructionSets/x86/Implementation/PerformImplementation.hpp
@@ -590,6 +590,9 @@ template <
 			}
 		return;
 
+		case Operation::ESC:
+		case Operation::NOP:	return;
+
 		case Operation::ADC:	Primitive::adc(destination(), source(), status);		break;
 		case Operation::ADD:	Primitive::add(destination(), source(), status);		break;
 		case Operation::AND:	Primitive::and_(destination(), source(), status);		break;
diff --git a/OSBindings/Mac/Clock SignalTests/8088Tests.mm b/OSBindings/Mac/Clock SignalTests/8088Tests.mm
index 0b8ac54ce..59f35beb9 100644
--- a/OSBindings/Mac/Clock SignalTests/8088Tests.mm	
+++ b/OSBindings/Mac/Clock SignalTests/8088Tests.mm	
@@ -285,6 +285,13 @@ struct FailedExecution {
 		@"98.json.gz",	// CBW
 		@"99.json.gz",	// CWD
 
+		// ESC
+		@"D8.json.gz",	@"D9.json.gz",	@"DA.json.gz",	@"DB.json.gz",
+		@"DC.json.gz",	@"DD.json.gz",	@"DE.json.gz",	@"DE.json.gz",
+
+		// NOP
+		@"90.json.gz",
+
 		// ADC
 		@"10.json.gz",	@"11.json.gz",	@"12.json.gz",	@"13.json.gz",	@"14.json.gz",	@"15.json.gz",
 		@"80.2.json.gz", @"81.2.json.gz", @"83.2.json.gz",