diff --git a/ethsock.c b/ethsock.c
index 6c4defd..1f42030 100644
--- a/ethsock.c
+++ b/ethsock.c
@@ -763,7 +763,7 @@ static int ethsock_arp(struct ethsock *sock, uint8_t *hwaddr, uint32_t ipaddr, s
 #elif defined(NMRPFLASH_WINDOWS)
 		return DeleteIpNetEntry(&arp) ? 0 : -1;
 #else
-		return systemf("arp -d %s", inet_ntoa(addr);
+		return systemf("arp -d %s", inet_ntoa(addr));
 #endif
 	}
 
diff --git a/nmrpd.h b/nmrpd.h
index d050707..0773777 100644
--- a/nmrpd.h
+++ b/nmrpd.h
@@ -26,6 +26,7 @@
 #if defined(_WIN32) || defined(_WIN64)
 #	define NMRPFLASH_WINDOWS
 #elif defined(__APPLE__) && defined(__MACH__)
+#	define NMRPFLASH_UNIX
 #	define NMRPFLASH_OSX
 #	define NMRPFLASH_BSD
 #elif defined (__unix__)