diff --git a/constants.asm b/constants.asm
index e929a48f2..4013bf74d 100644
--- a/constants.asm
+++ b/constants.asm
@@ -13,6 +13,7 @@ INCLUDE "constants/map_constants.asm"
 INCLUDE "constants/item_constants.asm"
 INCLUDE "constants/trainer_constants.asm"
 INCLUDE "constants/script_constants.asm"
+INCLUDE "constants/event_flags.asm"
 INCLUDE "constants/music_constants.asm"
 
 
diff --git a/constants/event_flags.asm b/constants/event_flags.asm
new file mode 100644
index 000000000..a533761fb
--- /dev/null
+++ b/constants/event_flags.asm
@@ -0,0 +1,6 @@
+EVENT_FOUGHT_SUDOWOODO EQU $02a
+EVENT_FOUGHT_HO_OH     EQU $317
+EVENT_FOUGHT_LUGIA     EQU $318
+EVENT_FOUGHT_SUICUNE   EQU $335
+EVENT_FOUGHT_SNORLAX   EQU $750
+
diff --git a/wram.asm b/wram.asm
index 15e5dbfd6..619bf42b5 100644
--- a/wram.asm
+++ b/wram.asm
@@ -1757,11 +1757,7 @@ SECTION "Events",WRAMX[$da72],BANK[1]
 
 EventFlags: ; da72
 ;RoomDecorations: ; dac6
-;HoOhEvent: ; dad4
-;LugiaEvent: ; dad5
-;SuicuneEvent: ; dad8 (tin tower)
 ;TeamRocketAzaleaTownAttackEvent: ; db51
-;SudowoodoEvent: ; db51
 ;PoliceAtElmsLabEvent: ; db52
 ;SalesmanMahoganyTownEvent: ; db5c
 ;RedGyaradosEvent: ; db5c