diff --git a/daemon/remote.c b/daemon/remote.c
index b255b96eb..587d7965f 100644
--- a/daemon/remote.c
+++ b/daemon/remote.c
@@ -628,7 +628,7 @@ print_mem(SSL* ssl, struct worker* worker, struct daemon* daemon)
 	extern void* unbound_start_brk;
 	void* cur = sbrk(0);
 	if(!print_longnum(ssl, "mem.total.sbrk"SQ, 
-		(size_t)(cur - unbound_start_brk))) return 0;
+		(size_t)((char*)cur - (char*)unbound_start_brk))) return 0;
 #endif /* HAVE_SBRK */
 	msg = slabhash_get_mem(daemon->env->msg_cache);
 	rrset = slabhash_get_mem(&daemon->env->rrset_cache->table);
diff --git a/iterator/iter_scrub.c b/iterator/iter_scrub.c
index f57c8a365..69782ce8c 100644
--- a/iterator/iter_scrub.c
+++ b/iterator/iter_scrub.c
@@ -104,6 +104,7 @@ has_additional(uint16_t t)
 		default:
 			return 0;
 	}
+	/* NOTREACHED */
 	return 0;
 }
 
diff --git a/libunbound/libunbound.c b/libunbound/libunbound.c
index 494908340..73002ae5e 100644
--- a/libunbound/libunbound.c
+++ b/libunbound/libunbound.c
@@ -467,6 +467,7 @@ ub_process(struct ub_ctx* ctx)
 		}
 		free(msg);
 	}
+	/* NOTREACHED */
 	return UB_NOERROR;
 }
 
diff --git a/validator/validator.c b/validator/validator.c
index d956b8d43..be415d832 100644
--- a/validator/validator.c
+++ b/validator/validator.c
@@ -2187,8 +2187,7 @@ return_bogus:
 			qinfo->qname_len, qinfo->qclass);
 		return (*ke) != NULL;
 	}
-	/* unreachable */
-	log_assert(0);
+	/* NOTREACHED */
 	return 0;
 }