diff --git a/gtsam/hybrid/GaussianMixtureFactor.h b/gtsam/hybrid/GaussianMixtureFactor.h
index 04b2414a7..9138d6b30 100644
--- a/gtsam/hybrid/GaussianMixtureFactor.h
+++ b/gtsam/hybrid/GaussianMixtureFactor.h
@@ -186,7 +186,4 @@ template <>
 struct traits<GaussianMixtureFactor> : public Testable<GaussianMixtureFactor> {
 };
 
-template <>
-struct traits<GraphAndConstant> : public Testable<GraphAndConstant> {};
-
 }  // namespace gtsam
diff --git a/gtsam/hybrid/HybridFactor.h b/gtsam/hybrid/HybridFactor.h
index 326570d6e..8c1b0dad3 100644
--- a/gtsam/hybrid/HybridFactor.h
+++ b/gtsam/hybrid/HybridFactor.h
@@ -192,4 +192,7 @@ class GTSAM_EXPORT HybridFactor : public Factor {
 template <>
 struct traits<HybridFactor> : public Testable<HybridFactor> {};
 
+template <>
+struct traits<GraphAndConstant> : public Testable<GraphAndConstant> {};
+
 }  // namespace gtsam