diff --git a/dive.h b/dive.h
index e189b860d..528b45a4b 100644
--- a/dive.h
+++ b/dive.h
@@ -811,7 +811,7 @@ void dump_plan(struct diveplan *diveplan);
 int plan(struct diveplan *diveplan, char **cached_datap, bool is_planner, bool show_disclaimer);
 void delete_single_dive(int idx);
 
-struct event *get_next_event(struct event *event, char *name);
+struct event *get_next_event(struct event *event, const char *name);
 
 
 /* these structs holds the information that
diff --git a/profile.c b/profile.c
index 53c50e303..7296733df 100644
--- a/profile.c
+++ b/profile.c
@@ -336,7 +336,7 @@ int get_cylinder_index(struct dive *dive, struct event *ev)
 	return best;
 }
 
-struct event *get_next_event(struct event *event, char *name)
+struct event *get_next_event(struct event *event, const char *name)
 {
 	if (!name || !*name)
 		return NULL;