diff --git a/SabreTools.Helper/Objects/DatObjects/Archive.cs b/SabreTools.Helper/Objects/DatObjects/Archive.cs
index 1f0eaea2..ca53d114 100644
--- a/SabreTools.Helper/Objects/DatObjects/Archive.cs
+++ b/SabreTools.Helper/Objects/DatObjects/Archive.cs
@@ -73,13 +73,13 @@
 
 		public override bool Equals(DatItem other)
 		{
-			// If we don't have a rom, return false
-			if (_itemType == other.Type)
+			// If we don't have an archive, return false
+			if (_itemType != other.Type)
 			{
 				return false;
 			}
 
-			// Otherwise, treat it as a rom
+			// Otherwise, treat it as an archive
 			Archive newOther = (Archive)other;
 
 			// If the archive information matches
diff --git a/SabreTools.Helper/Objects/DatObjects/BiosSet.cs b/SabreTools.Helper/Objects/DatObjects/BiosSet.cs
index ec412bcf..6600be81 100644
--- a/SabreTools.Helper/Objects/DatObjects/BiosSet.cs
+++ b/SabreTools.Helper/Objects/DatObjects/BiosSet.cs
@@ -103,13 +103,13 @@
 
 		public override bool Equals(DatItem other)
 		{
-			// If we don't have a rom, return false
-			if (_itemType == other.Type)
+			// If we don't have a biosset, return false
+			if (_itemType != other.Type)
 			{
 				return false;
 			}
 
-			// Otherwise, treat it as a rom
+			// Otherwise, treat it as a biosset
 			BiosSet newOther = (BiosSet)other;
 
 			// If the archive information matches
diff --git a/SabreTools.Helper/Objects/DatObjects/Disk.cs b/SabreTools.Helper/Objects/DatObjects/Disk.cs
index 9a2db1f6..5210ace4 100644
--- a/SabreTools.Helper/Objects/DatObjects/Disk.cs
+++ b/SabreTools.Helper/Objects/DatObjects/Disk.cs
@@ -124,7 +124,7 @@ namespace SabreTools.Helper
 			bool dupefound = false;
 
 			// If we don't have a rom, return false
-			if (_itemType == other.Type)
+			if (_itemType != other.Type)
 			{
 				return dupefound;
 			}
diff --git a/SabreTools.Helper/Objects/DatObjects/Release.cs b/SabreTools.Helper/Objects/DatObjects/Release.cs
index a82b6433..02300921 100644
--- a/SabreTools.Helper/Objects/DatObjects/Release.cs
+++ b/SabreTools.Helper/Objects/DatObjects/Release.cs
@@ -127,13 +127,13 @@
 
 		public override bool Equals(DatItem other)
 		{
-			// If we don't have a rom, return false
-			if (_itemType == other.Type)
+			// If we don't have a release return false
+			if (_itemType != other.Type)
 			{
 				return false;
 			}
 
-			// Otherwise, treat it as a rom
+			// Otherwise, treat it as a reease
 			Release newOther = (Release)other;
 
 			// If the archive information matches
diff --git a/SabreTools.Helper/Objects/DatObjects/Rom.cs b/SabreTools.Helper/Objects/DatObjects/Rom.cs
index 5bb18a8b..04d92a91 100644
--- a/SabreTools.Helper/Objects/DatObjects/Rom.cs
+++ b/SabreTools.Helper/Objects/DatObjects/Rom.cs
@@ -145,7 +145,7 @@ namespace SabreTools.Helper
 			bool dupefound = false;
 
 			// If we don't have a rom, return false
-			if (_itemType == other.Type)
+			if (_itemType != other.Type)
 			{
 				return dupefound;
 			}
diff --git a/SabreTools.Helper/Objects/DatObjects/Sample.cs b/SabreTools.Helper/Objects/DatObjects/Sample.cs
index 01331f1c..9791c0cb 100644
--- a/SabreTools.Helper/Objects/DatObjects/Sample.cs
+++ b/SabreTools.Helper/Objects/DatObjects/Sample.cs
@@ -73,13 +73,13 @@
 
 		public override bool Equals(DatItem other)
 		{
-			// If we don't have a rom, return false
-			if (_itemType == other.Type)
+			// If we don't have a sample, return false
+			if (_itemType != other.Type)
 			{
 				return false;
 			}
 
-			// Otherwise, treat it as a rom
+			// Otherwise, treat it as a sample
 			Sample newOther = (Sample)other;
 
 			// If the archive information matches