diff --git a/src/iodine.c b/src/iodine.c
index 9036cab..e0656ab 100644
--- a/src/iodine.c
+++ b/src/iodine.c
@@ -49,6 +49,8 @@ WSADATA wsa_data;
 
 #if !defined(BSD) && !defined(__GLIBC__)
 static char *__progname;
+#else
+extern char *__progname;
 #endif
 
 #define PASSWORD_ENV_VAR "IODINE_PASS"
@@ -68,8 +70,6 @@ static inline void help(bool verbose) __attribute__((noreturn));
 
 static void
 help(bool verbose) {
-	extern char *__progname;
-
 	fprintf(stderr, "iodine IP over DNS tunneling client\n");
 	fprintf(stderr, "Usage: %s [-v] [-h] [-f] [-r] [-u user] [-t chrootdir] [-d device] "
 			"[-P password] [-m maxfragsize] [-M maxlen] [-T type] [-O enc] [-L 0|1] [-I sec] "
diff --git a/src/iodined.c b/src/iodined.c
index 8a885d9..d7a0fca 100644
--- a/src/iodined.c
+++ b/src/iodined.c
@@ -105,6 +105,8 @@ static int debug;
 
 #if !defined(BSD) && !defined(__GLIBC__)
 static char *__progname;
+#else
+extern char *__progname;
 #endif
 
 /* Struct with IPv4 and IPv6 file descriptors.
@@ -2288,8 +2290,6 @@ write_dns(int fd, struct query *q, char *data, int datalen, char downenc)
 
 static void
 print_usage() {
-	extern char *__progname;
-
 	fprintf(stderr, "Usage: %s [-v] [-h] "
 		"[-4] [-6] [-c] [-s] [-f] [-D] [-u user] "
 		"[-t chrootdir] [-d device] [-m mtu] [-z context] "
@@ -2368,7 +2368,6 @@ prepare_dns_fd(int fd)
 int
 main(int argc, char **argv)
 {
-	extern char *__progname;
 	char *listen_ip4;
 	char *listen_ip6;
 	char *errormsg;