diff --git a/plugins/rbenv/rbenv.plugin.zsh b/plugins/rbenv/rbenv.plugin.zsh
index 3c964320a0d2..0f2d366e287a 100644
--- a/plugins/rbenv/rbenv.plugin.zsh
+++ b/plugins/rbenv/rbenv.plugin.zsh
@@ -34,7 +34,7 @@ if [[ $FOUND_RBENV -eq 1 ]]; then
     }
 
     function current_gemset() {
-        echo "$(rbenv gemset active 2>/dev/null | sed -e ":a" -e '$ s/\n/+/gp;N;b a' | head -n1)"
+        echo "$(rbenv gemset active 2>/dev/null)" | tr ' ' '+'
     }
 
     function gems() {