diff --git a/disassembler/disassembler_x86.cc b/disassembler/disassembler_x86.cc
index 195c45f..63a74c7 100644
--- a/disassembler/disassembler_x86.cc
+++ b/disassembler/disassembler_x86.cc
@@ -412,7 +412,7 @@
         break;
       case 0x2E:
         opcode << "u";
-        // FALLTHROUGH
+        FALLTHROUGH_INTENDED;
       case 0x2F:
         if (prefix[2] == 0x66) {
           opcode << "comisd";