1 files changed, 6 insertions, 0 deletions
diff --git a/src/map.c b/src/map.c
index e8fe476..5310479 100644
--- a/src/map.c
+++ b/src/map.c
@@ -454,6 +454,12 @@ map_data_set_entry(struct plugin_state *state,
 	struct map *map;
 	struct entry *entry;
 	map = map_data_find_map(state, domain_name, map_name);
+	if (key_len == (unsigned int) -1) {
+		key_len = strlen(key);
+	}
+	if (value_len == (unsigned int) -1) {
+		value_len = strlen(value);
+	}
 	if (map != NULL) {
 		entry = map_data_find_map_entry_id(state, map, id);
 		if (entry != NULL) {