diff --git a/src/NpcAct080.cpp b/src/NpcAct080.cpp
index 8a3d0008..0b1f57b2 100644
--- a/src/NpcAct080.cpp
+++ b/src/NpcAct080.cpp
@@ -1081,6 +1081,8 @@ void ActNpc088(NPCHAR *npc)
 		case 10:
 			if (++npc->act_wait > 100 && npc->act_wait % 6 == 1)
 			{
+				// The range of unsigned char is [0, 255] so these two values are implicitly truncated (Might be UB ?)
+				// TODO : Investigate on whether this is erroneous
 				if (npc->direct == 0)
 					deg = 0x88;
 				else
diff --git a/src/NpcAct260.cpp b/src/NpcAct260.cpp
index 2460aa4f..db398856 100644
--- a/src/NpcAct260.cpp
+++ b/src/NpcAct260.cpp
@@ -1291,6 +1291,8 @@ void ActNpc268(NPCHAR *npc)
 		case 51:
 			if (++npc->act_wait > 30 && npc->act_wait % 4 == 1)
 			{
+				// The range of unsigned char is [0, 255] so these two values are implicitly truncated (Might be UB ?)
+				// TODO : Investigate on whether this is erroneous
 				if (npc->direct == 0)
 					deg = 0x88;
 				else