--- a/libc/inet/resolv.c
+++ b/libc/inet/resolv.c
@@ -317,6 +317,7 @@
 #include <sys/utsname.h>
 #include <sys/un.h>
 #include <sys/stat.h>
+#include <net/if.h>
 #include <bits/uClibc_mutex.h>
 #include "internal/parse_config.h"
 
@@ -1861,7 +1862,6 @@
 					c = inet_ntop(AF_INET6,
 						(const void *) &sin6p->sin6_addr,
 						host, hostlen);
-#if 0
 					/* Does scope id need to be supported? */
 					uint32_t scopeid;
 					scopeid = sin6p->sin6_scope_id;
@@ -1898,7 +1898,6 @@
 							return EAI_SYSTEM;
 						memcpy(host + real_hostlen, scopebuf, scopelen + 1);
 					}
-#endif
 				}
 #endif /* __UCLIBC_HAS_IPV6__ */
 #if defined __UCLIBC_HAS_IPV4__
