diff --git a/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy b/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy
index d816b3a1..04ec1c2c 100644
--- a/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy
+++ b/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy
@@ -97,7 +97,7 @@ String.metaClass.upperInitial = { replaceAll(/(?<=[&()+.,-;<=>?\[\]_{|}~ ]|^)[a-
 *
 * e.g. "Deep Space 9" -> "DS9"
 */
-String.metaClass.acronym = { delegate.after(/^(?i)(The|A)\s/).trim().findAll(/(?<=[&()+.,-;<=>?\[\]_{|}~ ]|^)[\p{Alnum}]/).join().toUpperCase() }
+String.metaClass.acronym = { delegate.after(/^(?i)(The|A|An)\s/).trim().findAll(/(?<=[&()+.,-;<=>?\[\]_{|}~ ]|^)[\p{Alnum}]/).join().toUpperCase() }
 
 /**
  * Lower-case all letters that are not initials.
diff --git a/source/net/sourceforge/filebot/media/ReleaseInfo.properties b/source/net/sourceforge/filebot/media/ReleaseInfo.properties
index baf9a79c..bb6e53c5 100644
--- a/source/net/sourceforge/filebot/media/ReleaseInfo.properties
+++ b/source/net/sourceforge/filebot/media/ReleaseInfo.properties
@@ -2,7 +2,7 @@
 pattern.video.source: CAMRip|CAM|PDVD|TS|TELESYNC|PDVD|PPV|PPVRip|Screener|SCR|SCREENER|DVDSCR|DVDSCREENER|BDSCR|R4|R5|R5LINE|R5.LINE|DVD|DVD5|DVD9|DVDRip|DVDR|TVRip|DSR|PDTV|SDTV|HDTV|DVB|DVBRip|DTHRip|VODRip|VODR|BDRip|BRRip|BluRay|BDR|BD25|BD50|3D.BluRay|3DBluRay|3DBD|BR.Scr|BR.Screener|HDDVD|HDRip|WorkPrint|VHS|VCD|TELECINE|WEB.DL|WEBRip|ithd|iTunesHD
 
 # additional release info patterns
-pattern.video.format: DivX|Xvid|AVC|x264|h264|3ivx|mpg|mpeg|mpeg4|mp3|AAC|AAC2.0|AAC5.1|AAC.2.0|AAC.5.1|AC3|dd20|dd51|2ch|6ch|TS|DTS|DTS.HD|DTS.HD.MA|TrueHD|WS|HR|7p|720p|18p|1080p|PAL|NTSC|3D
+pattern.video.format: DivX|Xvid|AVC|x264|h264|h.264|3ivx|mpg|mpeg|mpeg4|mp3|AAC|AAC2.0|AAC5.1|AAC.2.0|AAC.5.1|AC3|dd20|dd51|2ch|6ch|TS|DTS|DTS.HD|DTS.HD.MA|TrueHD|WS|HR|7p|720p|18p|1080p|PAL|NTSC|3D
 
 # known release group names
 url.release-groups: http://filebot.net/data/release-groups.txt