diff --git a/include/Zydis/Internal/InstructionTable.h b/include/Zydis/Internal/InstructionTable.h
index ac5cea2..821b2b8 100644
--- a/include/Zydis/Internal/InstructionTable.h
+++ b/include/Zydis/Internal/InstructionTable.h
@@ -519,7 +519,7 @@ typedef struct ZydisInstructionDefinitionEVEX_
 typedef struct ZydisInstructionDefinitionMVEX_
 {
     ZYDIS_INSTRUCTION_DEFINITION_BASE;
-    ZydisMVEXFunctionality functionality : 4;
+    ZydisMVEXFunctionality functionality : 5;
     ZydisMaskPolicy maskPolicy : 2;
 } ZydisInstructionDefinitionMVEX;