diff --git a/lib/isc/include/isc/likely.h b/lib/isc/include/isc/likely.h
index 6c77957ebd..b127f45027 100644
--- a/lib/isc/include/isc/likely.h
+++ b/lib/isc/include/isc/likely.h
@@ -15,6 +15,10 @@
 /*%
  * Performance
  */
+#ifdef CPPCHECK
+#define ISC_LIKELY(x)            (x)
+#define ISC_UNLIKELY(x)          (x)
+#else
 #ifdef HAVE_BUILTIN_EXPECT
 #define ISC_LIKELY(x)            __builtin_expect((x), 1)
 #define ISC_UNLIKELY(x)          __builtin_expect((x), 0)
@@ -22,5 +26,6 @@
 #define ISC_LIKELY(x)            (x)
 #define ISC_UNLIKELY(x)          (x)
 #endif
+#endif
 
 #endif /* ISC_LIKELY_H */