diff --git a/libse/Forms/RemoveTextForHI.cs b/libse/Forms/RemoveTextForHI.cs
index c6c79ee15..6bfae9ddf 100644
--- a/libse/Forms/RemoveTextForHI.cs
+++ b/libse/Forms/RemoveTextForHI.cs
@@ -200,7 +200,9 @@ namespace Nikse.SubtitleEdit.Core.Forms
                                 string l1Trimmed = HtmlUtil.RemoveHtmlTags(lines[0]).TrimEnd('"');
                                 if (count == 1 && lines.Length == 2 && !l1Trimmed.EndsWith('.') &&
                                                                        !l1Trimmed.EndsWith('!') &&
-                                                                       !l1Trimmed.EndsWith('?'))
+                                                                       !l1Trimmed.EndsWith('?') &&
+                                                                       !l1Trimmed.EndsWith("--", StringComparison.Ordinal) &&
+                                                                       !l1Trimmed.EndsWith("—", StringComparison.Ordinal))
                                 {
                                     remove = false;
                                 }
@@ -343,7 +345,7 @@ namespace Nikse.SubtitleEdit.Core.Forms
                         if (insertDash)
                         {
                             string arr0QuoteTrimmed = arr[0].TrimEnd('"');
-                            if (arr0QuoteTrimmed.Length > 0 && !".?!".Contains(arr0QuoteTrimmed[arr0QuoteTrimmed.Length - 1]) && !arr0QuoteTrimmed.EndsWith("</i>", StringComparison.Ordinal))
+                            if (arr0QuoteTrimmed.Length > 0 && !".?!".Contains(arr0QuoteTrimmed[arr0QuoteTrimmed.Length - 1]) && !arr0QuoteTrimmed.EndsWith("</i>", StringComparison.Ordinal) && !arr0QuoteTrimmed.EndsWith("--", StringComparison.Ordinal) && !arr0QuoteTrimmed.EndsWith("—", StringComparison.Ordinal))
                             {
                                 if (!arr1Stripable.Pre.Contains('-'))
                                 {
diff --git a/src/Test/Logic/Forms/RemoveTextForHearImpairedTest.cs b/src/Test/Logic/Forms/RemoveTextForHearImpairedTest.cs
index 1bae15f68..1bf305fa1 100644
--- a/src/Test/Logic/Forms/RemoveTextForHearImpairedTest.cs
+++ b/src/Test/Logic/Forms/RemoveTextForHearImpairedTest.cs
@@ -1554,6 +1554,21 @@ namespace Test.Logic.Forms
             Assert.AreEqual(expected, actual);
         }
 
+        [TestMethod]
+        public void RemoveColonTestDash()
+        {
+            RemoveTextForHI target = GetRemoveTextForHiLib();
+            target.Settings.RemoveIfAllUppercase = false;
+            target.Settings.RemoveTextBeforeColon = true;
+            target.Settings.OnlyIfInSeparateLine = false;
+            target.Settings.OnlyIfInSeparateLine = false;
+            target.Settings.ColonSeparateLine = false;
+            target.Settings.RemoveTextBeforeColonOnlyUppercase = false;
+            string text = "- I have a theory, captain--" + Environment.NewLine + "UHURA: Captain Kirk.";
+            string expected = "- I have a theory, captain--" + Environment.NewLine + "- Captain Kirk."; ;
+            string actual = target.RemoveColon(text);
+            Assert.AreEqual(expected, actual);
+        }
 
         #region Additional test attributes