diff --git a/openbsc/src/bs11_config.c b/openbsc/src/bs11_config.c
index 3e8bf88..2a80a49 100644
--- a/openbsc/src/bs11_config.c
+++ b/openbsc/src/bs11_config.c
@@ -71,6 +71,11 @@
 
 static const u_int8_t too_fast[] = { 0x12, 0x80, 0x00, 0x00, 0x02, 0x02 };
 
+/* dummy function to keep gsm_data.c happy */
+struct counter *counter_alloc(const char *name)
+{
+	return NULL;
+}
 
 int handle_serial_msg(struct msgb *rx_msg);