diff --git a/data/pdfviewer.desktop b/data/pdfviewer.desktop
index 82beb66..9a5a180 100644
--- a/data/pdfviewer.desktop
+++ b/data/pdfviewer.desktop
@@ -6,3 +6,4 @@ Icon=document-print-preview
 Type=Application
 Categories=Office;Viewer;GTK;
 StartupNotify=true
+MimeType=application/pdf