diff --git a/arch/X86/X86Mapping.c b/arch/X86/X86Mapping.c
index 5313c97da..f292a6bc0 100644
--- a/arch/X86/X86Mapping.c
+++ b/arch/X86/X86Mapping.c
@@ -2841,11 +2841,23 @@ static bool valid_repne(cs_struct *h, unsigned int opcode)
 			case X86_INS_MOVSD:
 			case X86_INS_MOVSQ:
 
+			case X86_INS_LODSB:
+			case X86_INS_LODSW:
+			case X86_INS_LODSQ:
+
 			case X86_INS_STOSB:
 			case X86_INS_STOSW:
 			case X86_INS_STOSD:
 			case X86_INS_STOSQ:
 
+			case X86_INS_INSB:
+			case X86_INS_INSW:
+			case X86_INS_INSD:
+
+			case X86_INS_OUTSB:
+			case X86_INS_OUTSW:
+			case X86_INS_OUTSD:
+
 				return true;
 
 			case X86_INS_CMPSD: