diff --git a/plonky2_verifier/plonk.go b/plonky2_verifier/plonk.go
index f749201..1f7c501 100644
--- a/plonky2_verifier/plonk.go
+++ b/plonky2_verifier/plonk.go
@@ -118,6 +118,9 @@ func (p *PlonkChip) checkPartialProducts(
 
 func (p *PlonkChip) evaluateGateConstraints(vars EvaluationVars) []QuadraticExtension {
 	constraints := make([]QuadraticExtension, p.commonData.NumGateConstraints)
+	for i, _ := range constraints {
+		constraints[i] = p.qeAPI.ZERO_QE
+	}
 
 	for i, gate := range p.commonData.Gates {
 		selectorIndex := p.commonData.SelectorsInfo.selectorIndices[i]