diff --git a/include/bitcoin/system/warnings.hpp b/include/bitcoin/system/warnings.hpp
index cc22fec8a6..2bae64b1c0 100644
--- a/include/bitcoin/system/warnings.hpp
+++ b/include/bitcoin/system/warnings.hpp
@@ -88,6 +88,7 @@
         #define USE_CONST 26496
         #define USE_CONSTEXPR_FOR_FUNCTION 26497
         #define NO_USE_OF_MOVED_OBJECT 26800
+        #define NO_INCOMPLETE_SWITCH 26818
         #define UNSATISFIED_EXPECTATION 28020
     #endif
 #else