diff --git a/src/NzbDrone.Core.Test/ParserTests/ParserFixture.cs b/src/NzbDrone.Core.Test/ParserTests/ParserFixture.cs
index f2c4be9ee..71e1b1d39 100644
--- a/src/NzbDrone.Core.Test/ParserTests/ParserFixture.cs
+++ b/src/NzbDrone.Core.Test/ParserTests/ParserFixture.cs
@@ -124,5 +124,15 @@ public void should_parse_edition_lenient_mapping(string postTitle, string foundT
         {
             Parser.Parser.ParseMinimalMovieTitle(postTitle, foundTitle, 1290).Edition.Should().Be(edition);
         }
+
+        [TestCase("123", "tt0000123")]
+        [TestCase("1234567", "tt1234567")]
+        [TestCase("tt1234567", "tt1234567")]
+        [TestCase("tt12345678", "tt12345678")]
+        [TestCase("12345678", "tt12345678")]
+        public void should_normalize_imdbid(string imdbid, string normalized)
+        {
+            Parser.Parser.NormalizeImdbId(imdbid).Should().BeEquivalentTo(normalized);
+        }
     }
 }
diff --git a/src/NzbDrone.Core/Parser/Parser.cs b/src/NzbDrone.Core/Parser/Parser.cs
index e88272b20..b296c2918 100644
--- a/src/NzbDrone.Core/Parser/Parser.cs
+++ b/src/NzbDrone.Core/Parser/Parser.cs
@@ -352,7 +352,8 @@ public static string NormalizeImdbId(string imdbId)
         {
             if (imdbId.Length > 2)
             {
-                return (imdbId.Substring(0,2) != "tt" ? $"tt{imdbId}" : imdbId);
+                imdbId = imdbId.Replace("tt", "").PadLeft(7, '0');
+                return $"tt{imdbId}";
             }
 
             return null;