diff --git a/data/bash-completion.in b/data/bash-completion.in
index bc62c12..b8fe365 100644
--- a/data/bash-completion.in
+++ b/data/bash-completion.in
@@ -5,10 +5,10 @@ _zathura() {
   for PLUGIN in @PLUGINDIR@/lib*.so; do
     case ${PLUGIN##*/} in
       libpdf-poppler.so)
-        EXTS="$EXTS|pdf"
+        EXTS="$EXTS|pdf|PDF"
         ;;
       libpdf-mupdf.so)
-        EXTS="$EXTS|pdf|epub|oxps"
+        EXTS="$EXTS|pdf|PDF|epub|oxps"
         ;;
       libps.so)
         EXTS="$EXTS|ps|eps|epsi|epsf"