diff --git a/gtsam/hybrid/HybridNonlinearFactor.h b/gtsam/hybrid/HybridNonlinearFactor.h
index c3f127f4a..6cfce6bc0 100644
--- a/gtsam/hybrid/HybridNonlinearFactor.h
+++ b/gtsam/hybrid/HybridNonlinearFactor.h
@@ -236,7 +236,7 @@ class HybridNonlinearFactor : public HybridFactor {
   GaussianFactor::shared_ptr linearize(
       const Values& continuousValues,
       const DiscreteValues& discreteValues) const {
-    auto [factor, val] = factors_(discreteValues);
+    auto factor = factors_(discreteValues).first;
     return factor->linearize(continuousValues);
   }