diff --git a/ipc.c b/ipc.c
index 65ac85f..d8a311c 100644
--- a/ipc.c
+++ b/ipc.c
@@ -65,7 +65,7 @@ CommsInit(void      (*msg_receive_func) (gchar * msg))
 }
 
 void
-CommsSend(gchar * s)
+CommsSend(const gchar * s)
 {
    gchar               ss[21];
    int                 i, j, k, len;
diff --git a/ipc.h b/ipc.h
index 2a1718a..3fb3a7e 100644
--- a/ipc.h
+++ b/ipc.h
@@ -1,5 +1,5 @@
 gint                CommsInit(void (*msg_receive_func) (gchar * msg));
-void                CommsSend(gchar * s);
+void                CommsSend(const gchar * s);
 
 gchar               in_init;
 gint                gdk_error_warnings;