diff --git a/src/machine.h.in b/src/machine.h.in
index 3a4ff9be1f6f902f9c40999d1cf00a3be526f9f6..975dc6bda9626e289f1c5520ed295ae23ee0c0cc 100644
--- a/src/machine.h.in
+++ b/src/machine.h.in
@@ -177,7 +177,9 @@
 #undef HAVE_MEMCPY
 
 /* Define if you have memmove.  */
+#ifndef __CHECKER__
 #undef HAVE_MEMMOVE
+#endif
 
 /* Define if you have memmem.  */
 #undef HAVE_MEMMEM
@@ -206,7 +208,7 @@
 /* Define if you have sigvec */
 #undef HAVE_SIGVEC
 
-/* Define if you have sigvec */
+/* Define if your signals are one-shot */
 #undef SIGNAL_ONESHOT
 
 /* Define if you have setrlimit */