diff --git a/dotfiles/zshrc.d/usage.zsh b/dotfiles/zshrc.d/usage.zsh
index cb6804b..d9f1513 100644
--- a/dotfiles/zshrc.d/usage.zsh
+++ b/dotfiles/zshrc.d/usage.zsh
@@ -1,3 +1,3 @@
 function duf {
-     du -sk "$@" | sort -n | while read size fname; do for unit in k M G T P E Z Y; do if [ $size -lt 1024 ]; then echo -e "${size}${unit}t${fname}"; break; fi; size=$((size/1024)); done; done
+     du -sk "$@" | sort -n | while read size fname; do for unit in K M G T P E Z Y; do if [ $size -lt 1024 ]; then echo -e "${size}${unit}\t${fname}"; break; fi; size=$((size/1024)); done; done
 }