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-rw-r--r--navit/route.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/navit/route.c b/navit/route.c
index 5c23f0d29..116040857 100644
--- a/navit/route.c
+++ b/navit/route.c
@@ -2161,7 +2161,7 @@ static void route_process_traffic_distortion(struct route_graph *this, struct it
* @brief Adds a turn restriction item to the route graph
*
* @param this The route graph to add to
- * @param item The item to add
+ * @param item The item to add, must be of `type_street_turn_restriction_no` or `type_street_turn_restriction_only`
*/
static void route_process_turn_restriction(struct route_graph *this, struct item *item) {
struct route_graph_point *pnt[4];