diff --git a/Source/Core/Data/WADReader.cs b/Source/Core/Data/WADReader.cs
index 8ee5b81e..dc8fd83b 100755
--- a/Source/Core/Data/WADReader.cs
+++ b/Source/Core/Data/WADReader.cs
@@ -1206,25 +1206,6 @@ namespace CodeImp.DoomBuilder.Data
 			return result;
 		}
 
-		//mxd
-		private List<TextResourceData> GetAllLumpsDataWithPrefix(string prefix)
-		{
-			List<TextResourceData> result = new List<TextResourceData>();
-
-			// Find all lumps with given name
-			int lumpindex = file.FindLumpIndexWithPrefix(prefix);
-			while (lumpindex > -1)
-			{
-				// Add to collection
-				result.Add(new TextResourceData(this, file.Lumps[lumpindex].GetSafeStream(), prefix, lumpindex, true));
-
-				// Find next entry
-				lumpindex = file.FindLumpIndexWithPrefix(prefix, lumpindex + 1);
-			}
-
-			return result;
-		}
-
 		//sphere
 		private List<TextResourceData> GetAllPrefixedLumps(string prefix)
 		{
@@ -1233,10 +1214,10 @@ namespace CodeImp.DoomBuilder.Data
 			// Loop through the lumps
 			for (int i = 0; i < file.Lumps.Count - 1; i++)
 			{
-				// Check if the lump name matches
+				// Check if the lump name contains the given prefix
 				if (file.Lumps[i].Name.StartsWith(prefix))
 				{
-					// Found the lump!
+					// Found a matching lump!
 					result.Add(new TextResourceData(this, file.Lumps[i].GetSafeStream(), file.Lumps[i].Name, i, true));
 				}
 			}
diff --git a/Source/Core/IO/WAD.cs b/Source/Core/IO/WAD.cs
index 95bb73ee..43f4a76f 100755
--- a/Source/Core/IO/WAD.cs
+++ b/Source/Core/IO/WAD.cs
@@ -568,44 +568,6 @@ namespace CodeImp.DoomBuilder.IO
 			return -1;
 		}
 
-		// This finds a lump with given prefix, returns -1 when not found
-		public int FindLumpIndexWithPrefix(string prefix)
-		{
-			// Do search
-			return FindLumpIndexWithPrefix(prefix, 0, lumps.Count - 1);
-		}
-
-		// This finds a lump with given prefix, returns -1 when not found
-		public int FindLumpIndexWithPrefix(string prefix, int start)
-		{
-			// Do search
-			return FindLumpIndex(prefix, start, lumps.Count - 1);
-		}
-
-		// This finds a lump with given prefix, returns -1 when not found
-		public int FindLumpIndexWithPrefix(string prefix, int start, int end)
-		{
-			if (prefix.Length > 8 || lumps.Count == 0 || start > lumps.Count - 1) return -1; //mxd. Can't be here. Go away!
-
-			// Fix start/end when they exceed safe bounds
-			start = Math.Max(start, 0);
-			end = General.Clamp(end, 0, lumps.Count - 1);
-
-			// Loop through the lumps
-			for (int i = start; i < end + 1; i++)
-			{
-				// Check if the lump name matches
-				if (lumps[i].Name.StartsWith(prefix))
-				{
-					// Found the lump!
-					return i;
-				}
-			}
-
-			// Nothing found
-			return -1;
-		}
-
 		//mxd. Same as above, but searches in reversed order
 
 		// This finds a lump by name, returns null when not found