diff --git a/src/environment/shell.go b/src/environment/shell.go
index 3033b97e..984f1eef 100644
--- a/src/environment/shell.go
+++ b/src/environment/shell.go
@@ -504,7 +504,7 @@ func (env *ShellEnvironment) RunCommand(command string, args ...string) (string,
 }
 
 func (env *ShellEnvironment) RunShellCommand(shell, command string) string {
-	defer env.Trace(time.Now(), "RunShellCommand", shell, command)
+	defer env.Trace(time.Now(), "RunShellCommand")
 	if out, err := env.RunCommand(shell, "-c", command); err == nil {
 		return out
 	}