diff --git a/afsk/main.c b/afsk/main.c
index e607c3ad..68950ac1 100644
--- a/afsk/main.c
+++ b/afsk/main.c
@@ -56,7 +56,7 @@ ax5043_conf_t hax5043;
 ax25_conf_t hax25;
 
 static void init_rf();
-int twosToInt( val, len);
+int twosToInt(int val, int len);
 int get_tlm(int tlm[][5]);
 long int timestamp;
 void config_x25();