diff --git a/include/villas/mapping.h b/include/villas/mapping.h
index 89ec23817..54691695b 100644
--- a/include/villas/mapping.h
+++ b/include/villas/mapping.h
@@ -62,8 +62,7 @@ enum mapping_header_type {
 
 enum mapping_timestamp_type {
 	MAPPING_TIMESTAMP_TYPE_ORIGIN,
-	MAPPING_TIMESTAMP_TYPE_RECEIVED,
-	MAPPING_TIMESTAMP_TYPE_SEND
+	MAPPING_TIMESTAMP_TYPE_RECEIVED
 };
 
 struct mapping_entry {
diff --git a/lib/mapping.c b/lib/mapping.c
index 4b7f16269..f4b219342 100644
--- a/lib/mapping.c
+++ b/lib/mapping.c
@@ -122,8 +122,6 @@ int mapping_parse_str(struct mapping_entry *me, const char *str, struct list *no
 			me->timestamp.type = MAPPING_TIMESTAMP_TYPE_ORIGIN;
 		else if (!strcmp(field, "received"))
 			me->timestamp.type = MAPPING_TIMESTAMP_TYPE_RECEIVED;
-		else if (!strcmp(field, "sent"))
-			me->timestamp.type = MAPPING_TIMESTAMP_TYPE_SEND;
 		else
 			goto invalid_format;
 	}