diff --git a/bin/autojump.fish b/bin/autojump.fish
index e995506..6a9246c 100644
--- a/bin/autojump.fish
+++ b/bin/autojump.fish
@@ -2,7 +2,7 @@ set -gx AUTOJUMP_SOURCED 1
 
 # set user installation path
 if test -d ~/.autojump
-    set -x PATH ~/.autojump/bin $PATH
+    contains ~/.autojump/bin $PATH or set -x PATH ~/.autojump/bin $PATH
 end
 
 # Set ostype, if not set