diff -Nru a/src/subtitlecomposer.xml b/src/subtitlecomposer.xml
--- a/src/subtitlecomposer.xml	2018-02-11 03:08:46.000000000 +0100
+++ b/src/subtitlecomposer.xml	2018-02-15 18:03:07.590956372 +0100
@@ -1,63 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
-	<mime-type type="text/x-ssa">
-		<comment>SubStation Alpha subtitles</comment>
-		<acronym>SSA</acronym>
-		<expanded-acronym>SubStation Alpha</expanded-acronym>
-		<sub-class-of type="text/plain"/>
-		<magic priority="50">
-			<match type="string" value="[Script Info]" offset="0:256">
-				<match type="string" value="ScriptType: V4.00" offset="0:256"/>
-			</match>
-		</magic>
-		<generic-icon name="text-x-generic"/>
-		<glob pattern="*.ssa"/>
-	</mime-type>
-
-	<mime-type type="text/x-ass">
-		<comment>Advanced SubStation Alpha subtitles</comment>
-		<acronym>ASS</acronym>
-		<expanded-acronym>Advanced SubStation</expanded-acronym>
-		<sub-class-of type="text/plain"/>
-		<magic priority="50">
-			<match type="string" value="[Script Info]" offset="0:256">
-				<match type="string" value="ScriptType: V4.00+" offset="0:256"/>
-			</match>
-		</magic>
-		<generic-icon name="text-x-generic"/>
-		<glob pattern="*.ass"/>
-	</mime-type>
-
-	<!-- Included in freedesktop.org database but misses *.txt glob
-		 and for some reason txt files are not recognized without it
-		 (unlike TMPlayer txt files).
-	-->
-	<mime-type type="text/x-microdvd">
-		<comment>MicroDVD subtitles</comment>
-		<sub-class-of type="text/plain"/>
-		<magic priority="50">
-			<match type="string" value="{1}" offset="0"/>
-			<match type="string" value="{0}" offset="0"/>
-			<match type="string" value="}{" offset="0:6"/>
-		</magic>
-		<generic-icon name="text-x-generic"/>
-		<glob pattern="*.sub"/>
-		<glob pattern="*.txt"/>
-	</mime-type>
-
-	<!-- Included in freedesktop.org database but misses *.mpsub glob -->
-	<mime-type type="text/x-mpsub">
-		<comment>MPSub subtitles</comment>
-		<acronym>MPSub</acronym>
-		<expanded-acronym>MPlayer Subtitle</expanded-acronym>
-		<sub-class-of type="text/plain"/>
-		<magic priority="50">
-			<match type="string" value="FORMAT=" offset="0:256"/>
-		</magic>
-		<generic-icon name="text-x-generic"/>
-		<glob pattern="*.mpsub"/>
-		<glob pattern="*.sub"/>
-	</mime-type>
 
 	<!-- Included in freedesktop.org database
 	<mime-type type="application/x-subrip"/>