diff --git a/libcontainer/generic_error.go b/libcontainer/generic_error.go
index 6e7de2fe7..d185ebd89 100644
--- a/libcontainer/generic_error.go
+++ b/libcontainer/generic_error.go
@@ -80,7 +80,7 @@ func (e *genericError) Error() string {
 		return e.Message
 	}
 	frame := e.Stack.Frames[0]
-	return fmt.Sprintf("%s:%d: %s caused %q", frame.File, frame.Line, e.Cause, e.Message)
+	return fmt.Sprintf("%s:%d: %s caused: %s", frame.File, frame.Line, e.Cause, e.Message)
 }
 
 func (e *genericError) Code() ErrorCode {