diff --git a/embedded8266/web/execute_reflash.c b/embedded8266/web/execute_reflash.c
index e525aed..6105c86 100644
--- a/embedded8266/web/execute_reflash.c
+++ b/embedded8266/web/execute_reflash.c
@@ -14,6 +14,11 @@
 #define BLOCK_SIZE 65536
 #define SECTOR_SIZE 4096
 #define PADDING 1024
+
+#ifndef MSG_NOSIGNAL
+	#define MSG_NOSIGNAL 0x0 //Don't request NOSIGNAL on systems where this is not implemented.
+#endif
+
 int sockfd;
 	struct sockaddr_in servaddr,cliaddr;
 
diff --git a/embedded8266/web/pushtodev.c b/embedded8266/web/pushtodev.c
index 56583a3..413c05e 100644
--- a/embedded8266/web/pushtodev.c
+++ b/embedded8266/web/pushtodev.c
@@ -12,6 +12,11 @@
 #include <string.h>
 
 #define sector_SIZE 4096
+
+#ifndef MSG_NOSIGNAL
+	#define MSG_NOSIGNAL 0x0 //Don't request NOSIGNAL on systems where this is not implemented.
+#endif
+
 int sockfd;
 char recvline[10000];