diff --git a/compiler/lib/Conversion/ConcreteToBConcrete/ConcreteToBConcrete.cpp b/compiler/lib/Conversion/ConcreteToBConcrete/ConcreteToBConcrete.cpp
index f57efbc17..d3e8c9869 100644
--- a/compiler/lib/Conversion/ConcreteToBConcrete/ConcreteToBConcrete.cpp
+++ b/compiler/lib/Conversion/ConcreteToBConcrete/ConcreteToBConcrete.cpp
@@ -128,7 +128,7 @@ struct ZeroOpPattern : public mlir::OpRewritePattern<ZeroOp> {
                             mlir::ValueRange blockArgs) {
       // %c0 = 0 : i64
       auto cstOp = nestedBuilder.create<mlir::arith::ConstantOp>(
-          nestedLoc, nestedBuilder.getI64IntegerAttr(1));
+          nestedLoc, nestedBuilder.getI64IntegerAttr(0));
       // tensor.yield %z : !FHE.eint<p>
       nestedBuilder.create<mlir::tensor::YieldOp>(nestedLoc, cstOp.getResult());
     };