Republican advocates of a California ballot initiative to repeal the state’s new gas tax will sue Attorney General Xavier Becerra over language he issued describing the measure, which they say is “misleading” to voters.

The language, reported by the Los Angeles Times, says the referendum “eliminates recently enacted road repair and transportation funding by repealing revenues dedicated for those purposes.” Proponents of the repeal say that there is no way to be certain that the gas tax and new vehicle registration fees will be used to fix the state’s roads.

In addition, the Times notes, Becerra’s description says the referendum “Eliminates Independent Office of Audits and Investigations.” Advocates of the repeal note that the office, provided for in the gas tax law, does not yet exist.

The language in Becerra’s description must be provided by those gathering signatures for the referendum, and backers are concerned that the language of the description could dissuade some people from supporting the effort.

Assemblyman Travis Allen (R-Huntington Beach), who is leading the repeal effort and is running for governor in 2018, told the Times that “almost everything” in Becerra’s description of the referendum was misleading.

The battle over language is only the latest controversy in the fight over the gas tax. Democrats are trying to change the rules for recall elections to protect State Senator Josh Newman (D-Fullerton), who voted for the gas tax. (The Wall Street Journal accused them of “rigging the recall rules” to move the election from this fall to next June, when Democratic turnout is expected to be higher.) Democrats are also trying to remove campaign finance restrictions on legislators so that they can donate unlimited amounts of money to Newman’s effort to defend his seat in the recall. And Democrats are suing members of the California College Republicans who gathered signatures for the recall, alleging that the students misled voters by telling them that recalling Newman would mean repealing the gas tax.