diff --git a/src/gui/Src/Disassembler/capstone_gui.h b/src/gui/Src/Disassembler/capstone_gui.h
index 943957b8..b17f3b15 100644
--- a/src/gui/Src/Disassembler/capstone_gui.h
+++ b/src/gui/Src/Disassembler/capstone_gui.h
@@ -32,6 +32,7 @@ public:
         MnemonicNop,
         MnemonicFar,
         MnemonicInt3,
+        MnemonicUnusual,
         //memory
         MemorySize,
         MemorySegment,