diff --git a/bash/alias/git.sh b/bash/alias/git.sh
index 769e5e3..9ce63bc 100644
--- a/bash/alias/git.sh
+++ b/bash/alias/git.sh
@@ -99,7 +99,7 @@ expire \
 git \
 gc \
 --aggressive \
---prune \"now\" \
+--prune=\"now\" \
 "
 
 # initialize a new repository