diff --git a/src/game/Unit.h b/src/game/Unit.h
index 1b5a1b811..faabc2ad2 100644
--- a/src/game/Unit.h
+++ b/src/game/Unit.h
@@ -156,7 +156,7 @@ enum UnitStandFlags
 enum UnitBytes1_Flags
 {
     UNIT_BYTE1_FLAG_ALWAYS_STAND = 0x01,
-    UNIT_BYTE1_FLAG_UNK_2        = 0x02,
+    UNIT_BYTE1_FLAG_UNK_2        = 0x02,                    // Creature that can fly and are not on the ground appear to have this flag. If they are on the ground, flag is not present.
     UNIT_BYTE1_FLAG_UNTRACKABLE  = 0x04,
     UNIT_BYTE1_FLAG_ALL          = 0xFF
 };
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index e69ebfaad..49dfcaf4a 100644
--- a/src/shared/revision_nr.h
+++ b/src/shared/revision_nr.h
@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "9647"
+ #define REVISION_NR "9648"
 #endif // __REVISION_NR_H__