diff --git a/libc/include/arpa/inet.h b/libc/include/arpa/inet.h
index db054c9..748b7a1 100644
--- a/libc/include/arpa/inet.h
+++ b/libc/include/arpa/inet.h
@@ -36,17 +36,17 @@
 
 __BEGIN_DECLS
 
-in_addr_t inet_addr(const char* __s);
-int inet_aton(const char* __s, struct in_addr* __addr);
+in_addr_t inet_addr(const char* _Nonnull __s);
+int inet_aton(const char* _Nonnull __s, struct in_addr* _Nullable __addr);
 in_addr_t inet_lnaof(struct in_addr __addr) __INTRODUCED_IN(21);
 struct in_addr inet_makeaddr(in_addr_t __net, in_addr_t __host) __INTRODUCED_IN(21);
 in_addr_t inet_netof(struct in_addr __addr) __INTRODUCED_IN(21);
-in_addr_t inet_network(const char* __s) __INTRODUCED_IN(21);
-char* inet_ntoa(struct in_addr __addr);
-const char* inet_ntop(int __af, const void* __src, char* __dst, socklen_t __size);
-unsigned int inet_nsap_addr(const char* __ascii, unsigned char* __binary, int __n);
-char* inet_nsap_ntoa(int __binary_length, const unsigned char* __binary, char* __ascii);
-int inet_pton(int __af, const char* __src, void* __dst);
+in_addr_t inet_network(const char* _Nonnull __s) __INTRODUCED_IN(21);
+char* _Nonnull inet_ntoa(struct in_addr __addr);
+const char* _Nullable inet_ntop(int __af, const void* _Nonnull __src, char* _Nonnull __dst, socklen_t __size);
+unsigned int inet_nsap_addr(const char* _Nonnull __ascii, unsigned char* _Nonnull __binary, int __n);
+char* _Nonnull inet_nsap_ntoa(int __binary_length, const unsigned char* _Nonnull __binary, char* _Nullable __ascii);
+int inet_pton(int __af, const char* _Nonnull __src, void* _Nonnull __dst);
 
 __END_DECLS
 
diff --git a/libc/include/netdb.h b/libc/include/netdb.h
index 7afdc1a..88214d5 100644
--- a/libc/include/netdb.h
+++ b/libc/include/netdb.h
@@ -78,32 +78,34 @@
  * supplied in host order, and returned in network order (suitable for
  * use in system calls).
  */
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wnullability-completeness"
 struct hostent {
-	char	* _Nullable h_name;	/* official name of host */
-	char	* _Nullable * _Nullable h_aliases;	/* alias list */
+	char	*h_name;	/* official name of host */
+	char	**h_aliases;	/* alias list */
 	int	h_addrtype;	/* host address type */
 	int	h_length;	/* length of address */
-	char	* _Nullable * _Nullable h_addr_list;	/* list of addresses from name server */
+	char	**h_addr_list;	/* list of addresses from name server */
 #define	h_addr	h_addr_list[0]	/* address, for backward compatibility */
 };
 
 struct netent {
-	char		* _Nullable n_name;	/* official name of net */
-	char		* _Nullable * _Nullable n_aliases;	/* alias list */
+	char		*n_name;	/* official name of net */
+	char		**n_aliases;	/* alias list */
 	int		n_addrtype;	/* net address type */
 	uint32_t	n_net;		/* network # */
 };
 
 struct servent {
-	char	* _Nullable s_name;	/* official service name */
-	char	* _Nullable * _Nullable s_aliases;	/* alias list */
+	char	*s_name;	/* official service name */
+	char	**s_aliases;	/* alias list */
 	int	s_port;		/* port # */
 	char	* _Nullable s_proto;	/* protocol to use */
 };
 
 struct protoent {
-	char	* _Nullable p_name;	/* official protocol name */
-	char	* _Nullable * _Nullable p_aliases;	/* alias list */
+	char	*p_name;	/* official protocol name */
+	char	**p_aliases;	/* alias list */
 	int	p_proto;	/* protocol # */
 };
 
@@ -113,10 +115,11 @@
 	int	ai_socktype;	/* SOCK_xxx */
 	int	ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
 	socklen_t ai_addrlen;	/* length of ai_addr */
-	char	* _Nullable ai_canonname;	/* canonical name for hostname */
-	struct	sockaddr * _Nullable ai_addr;	/* binary address */
-	struct	addrinfo * _Nullable ai_next;	/* next structure in linked list */
+	char	*ai_canonname;	/* canonical name for hostname */
+	struct	sockaddr *ai_addr;	/* binary address */
+	struct	addrinfo *ai_next;	/* next structure in linked list */
 };
+#pragma clang diagnostic pop
 
 /*
  * Error return codes from gethostbyname() and gethostbyaddr()