diff --git a/logcat/event-log-tags b/logcat/event-log-tags
index 1262f4470a6d1ff67244f56bc57d46d6e8d69908..5c4c96206b29d697c16dd48858f7d1605268df72 100644
--- a/logcat/event-log-tags
+++ b/logcat/event-log-tags
@@ -371,6 +371,9 @@
 # CDMA data network drop
 50111 cdma_data_drop (cid|1|5), (network_type|1|5)
 
+# GSM radio access technology switched
+50112 gsm_rat_switched (cid|1|5), (network_from|1|5), (network_to|1|5)
+
 # Do not change these names without updating tag in:
 #//device/dalvik/libcore/luni/src/main/native/org_apache_harmony_luni_platform_OSNetworkSystem.c
 51000 socket_stats (send|1|2),(recv|1|2),(ip|1|5),(port|1|5),(close|1|5)