diff --git a/main.h b/main.h
index 23a1f5a0..01f08db8 100644
--- a/main.h
+++ b/main.h
@@ -94,6 +94,7 @@ extern int Encode_8b10b[][256];
 extern const unsigned char ALPHA_TO[];
 // const unsigned char *CCodecAO40::encode(unsigned char *source_bytes, int byte_count);
 void program_radio();
+void socket_send(int length);
 
 int socket_open = 0;
 int sock = 0;