In PRL 102, 197002 (2009), it was reported that Eu becomes superconducting in the pressure and temperature range [84-142GPa], [1.8-2.75K]. The claim was largely based on ac susceptibility measurements. Here I point out that recently reported ac susceptibility measurements on a hydride compound that appears to become superconducting near room temperature (Nature 586, 373 (2020)) call the results for Eu into question. It is suggested that the experiments on Eu should be repeated to validate or rule out the claim of superconductivity.