diff --git a/include/osmocom/core/statistics.h b/include/osmocom/core/statistics.h
index 1849327..04816c1 100644
--- a/include/osmocom/core/statistics.h
+++ b/include/osmocom/core/statistics.h
@@ -1,33 +1,53 @@
 #ifndef _STATISTICS_H
 #define _STATISTICS_H
 
+/*! \file statistics.h
+ *  \brief Common routines regarding statistics */
+
+/*! structure representing a single counter */
 struct osmo_counter {
-	struct llist_head list;
-	const char *name;
-	const char *description;
-	unsigned long value;
+	struct llist_head list;		/*!< \brief internal list head */
+	const char *name;		/*!< \brief human-readable name */
+	const char *description;	/*!< \brief humn-readable description */
+	unsigned long value;		/*!< \brief current value */
 };
 
+/*! \brief Increment counter */
 static inline void osmo_counter_inc(struct osmo_counter *ctr)
 {
 	ctr->value++;
 }
 
+/*! \brief Get current value of counter */
 static inline unsigned long osmo_counter_get(struct osmo_counter *ctr)
 {
 	return ctr->value;
 }
 
+/*! \brief Reset current value of counter to 0 */
 static inline void osmo_counter_reset(struct osmo_counter *ctr)
 {
 	ctr->value = 0;
 }
 
+/*! \brief Allocate a new counter */
 struct osmo_counter *osmo_counter_alloc(const char *name);
+
+/*! \brief Free the specified counter
+ *  \param[ctr] Counter
+ */
 void osmo_counter_free(struct osmo_counter *ctr);
 
+/*! \brief Iteate over all counters
+ *  \param[in] handle_counter Call-back function
+ *  \param[in] data Private dtata handed through to \a handle_counter
+ */
 int osmo_counters_for_each(int (*handle_counter)(struct osmo_counter *, void *), void *data);
 
+/*! \brief Resolve counter by human-readable name
+ *  \param[in] name human-readable name of counter
+ *  \returns pointer to counter (\ref osmo_counter) or NULL otherwise
+ */
 struct osmo_counter *osmo_counter_get_by_name(const char *name);
 
 #endif /* _STATISTICS_H */