An example of a pre-treatment fixing fluid for an offset coated medium includes calcium propionate, calcium pantothenate, tetraethylene glycol, a surfactant having an HLB less than 10, an acid, and a balance of water. The calcium propionate is present in an amount ranging from greater than 4.5 wt % to 8.0 wt %, the calcium pantothenate is present in an amount ranging from about 2.0 wt % to equal to or less than 15 wt %, and the surfactant is present in an amount ranging from about 0.01 wt % to about 1.0 wt %, each based on the total wt % of the pre-treatment fixing fluid. The acid is present in an amount sufficient to render the pH from about 4.0 to about 7.0.