diff --git a/sub/bash/aliases b/sub/bash/aliases
index 7654083..eb2e377 100644
--- a/sub/bash/aliases
+++ b/sub/bash/aliases
@@ -42,7 +42,7 @@ alias j='jobs -l'
 alias hg='history|grep'
 
 # utils
-alias sha='shasum -a 256 | head -c 64'
+alias sha='(shasum -a 256 | head -c 64)'
 alias genpass="openssl rand -base64 12"
 alias gensalt="dd if=/dev/urandom count=16 2>/dev/null | sha256sum | head -c 64"
 alias diff='colordiff'