diff --git a/.config/zsh/zshrc.d/40-functions.zsh b/.config/zsh/zshrc.d/40-functions.zsh
index 56ea924..316d1dc 100644
--- a/.config/zsh/zshrc.d/40-functions.zsh
+++ b/.config/zsh/zshrc.d/40-functions.zsh
@@ -633,5 +633,5 @@ pdfunite() {
 
 # List pids of processes that use an open file
 psofof() {
-	lsof "$@" | tail -n +2 | awk '{ print $2 }'
+	lsof "$@" | tail -n +2 | awk '{ print $2 }' | sort -u
 }