diff --git a/InstructionSets/x86/Implementation/BCD.hpp b/InstructionSets/x86/Implementation/BCD.hpp
index 26fd87056..2e6d77388 100644
--- a/InstructionSets/x86/Implementation/BCD.hpp
+++ b/InstructionSets/x86/Implementation/BCD.hpp
@@ -30,6 +30,8 @@ void aaas(
 			--ax.halves.high;
 		}
 		context.flags.template set_from<Flag::Carry, Flag::AuxiliaryCarry>(1);
+	} else {
+		context.flags.template set_from<Flag::Carry>(0);
 	}
 	ax.halves.low &= 0x0f;
 }