In the article “Inhibitory Plasticity Permits the Recruitment of CA2 Pyramidal Neurons by CA3” by Kaoutsar Nasrallah, Rebecca A. Piskorowski, and Vivien Chevaleyre, which appeared on pages e0049-15.2015 1-12 of the July/August 2015 issue, the authors forgot to mention that the data included in Figure 2, A (CA1 fPSP [field postsynaptic potential] amplitude percentage in the presence of GABA blockers, filled circles) and B (CA2 fPSP amplitude percentage in the presence of GABA blockers, filled circles), had been published previously in Figure 7A of the article “Strong CA2 Pyramidal Neuron Synapses Define a Powerful Disynaptic Cortico-Hippocampal Loop” by Vivien Chevaleyre and S.A. Siegelbaum (which appeared in Neuron, 2010, volume 66, pages 560–572). The reuse of these control data does not affect any of the conclusions or interpretations in our article.