diff --git a/cubesatsim/cubesatsim.h b/cubesatsim/cubesatsim.h
index 2d684005..8b6677ed 100644
--- a/cubesatsim/cubesatsim.h
+++ b/cubesatsim/cubesatsim.h
@@ -209,7 +209,7 @@ void write_config_file();
 void read_mode(); 
 void write_mode(); 
 void start_clockgen();
-void print_file_hex((char* filename, int bytes);
+void print_file_hex(char* filename, int bytes);
 void print_hex2(byte octet);                    
 
 #ifndef STASSID