diff --git a/Source/lib/oned/Code39Writer.cs b/Source/lib/oned/Code39Writer.cs
index 722fc602..107fa215 100644
--- a/Source/lib/oned/Code39Writer.cs
+++ b/Source/lib/oned/Code39Writer.cs
@@ -94,7 +94,7 @@ public override bool[] encode(String contents)
          int pos = appendPattern(result, 0, widths, true);
          int[] narrowWhite = {1};
          pos += appendPattern(result, pos, narrowWhite, false);
-         //append next character to bytematrix
+         //append next character to byte matrix
          for (int i = 0; i < length; i++)
          {
             int indexInString = Code39Reader.ALPHABET_STRING.IndexOf(contents[i]);
@@ -103,7 +103,7 @@ public override bool[] encode(String contents)
             pos += appendPattern(result, pos, narrowWhite, false);
          }
          toIntArray(Code39Reader.CHARACTER_ENCODINGS[39], widths);
-         pos += appendPattern(result, pos, widths, true);
+         appendPattern(result, pos, widths, true);
          return result;
       }
 
diff --git a/Source/lib/oned/EAN13Writer.cs b/Source/lib/oned/EAN13Writer.cs
index 02733c13..4c899a81 100644
--- a/Source/lib/oned/EAN13Writer.cs
+++ b/Source/lib/oned/EAN13Writer.cs
@@ -116,7 +116,7 @@ override public bool[] encode(String contents)
             int digit = Int32.Parse(contents.Substring(i, 1));
             pos += appendPattern(result, pos, UPCEANReader.L_PATTERNS[digit], true);
          }
-         pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
+         appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
 
          return result;
       }
diff --git a/Source/lib/oned/EAN8Writer.cs b/Source/lib/oned/EAN8Writer.cs
index ba025338..162b5851 100644
--- a/Source/lib/oned/EAN8Writer.cs
+++ b/Source/lib/oned/EAN8Writer.cs
@@ -98,7 +98,7 @@ override public bool[] encode(String contents)
             int digit = Int32.Parse(contents.Substring(i, 1));
             pos += appendPattern(result, pos, UPCEANReader.L_PATTERNS[digit], true);
          }
-         pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
+         appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
 
          return result;
       }