diff --git a/cmd/which.go b/cmd/which.go
index 80b5fae..168abdd 100644
--- a/cmd/which.go
+++ b/cmd/which.go
@@ -22,7 +22,7 @@ func Which(cmd string, options BasicOptions) (dir string, err error) {
 		sourceCommand.WriteString(fmt.Sprintf("source %s && ", value))
 	}
 
-	command := exec.Command(sourceCommand.String(), "which", cmd)
+	command := exec.Command("which", cmd)
 
 	if options.Cwd != "" {
 		command.Dir = options.Cwd