diff --git a/rc/detection/file.kak b/rc/detection/file.kak
index faf93e6b..99e0b05b 100644
--- a/rc/detection/file.kak
+++ b/rc/detection/file.kak
@@ -1,4 +1,4 @@
-hook global BufOpenFile .* %{ evaluate-commands %sh{
+define-command -hidden file-detection %{ evaluate-commands %sh{
     if [ -z "${kak_opt_filetype}" ]; then
         mime=$(file -b --mime-type -L "${kak_buffile}")
         mime=${mime%;*}
@@ -9,6 +9,7 @@ hook global BufOpenFile .* %{ evaluate-commands %sh{
             text/x-shellscript) filetype="sh" ;;
             text/x-script.*) filetype="${mime#text/x-script.}" ;;
             text/x-*) filetype="${mime#text/x-}" ;;
+            text/plain) exit ;;
             text/*)   filetype="${mime#text/}" ;;
             application/x-shellscript) filetype="sh" ;;
             application/x-*) filetype="${mime#application/x-}" ;;
@@ -20,3 +21,6 @@ hook global BufOpenFile .* %{ evaluate-commands %sh{
         fi
     fi
 } }
+
+hook global BufOpenFile .* file-detection
+hook global BufWritePost .* file-detection