The Swedish gambling authority, Spelinspektionen, has imposed a penalty fee and reprimand on operators Evoke Gaming and Mr Green.
The penalties are in response to the failure of the companies to comply with their obligation to "report certain information regarding gaming responsibility,” said the authority.
Both are said by the inspectorate to have "for a long time shortcomings in their reporting and what has been reported has subsequently proved to be incorrect."
Spelinspektionen said in a release: “The companies have now implemented technical solutions to report the information required by the regulations and there is no indication that the infringement will be repeated.
"They have nevertheless breached their obligations under the regulations for a significantly long time. A breach of the requirements of the regulation cannot be excused or considered to constitute a minor violation.
"Against this background, the Swedish Gaming Inspectorate considers that a remark combined with a penalty fee is a sufficient intervention for each company.”
The penalty for Evoke was SEK450,000 (€42,900) and for Mr Green SEK1m (€95,300).
