diff --git a/gtsam_unstable/linear/LinearInequality.h b/gtsam_unstable/linear/LinearInequality.h
index 9bd3ecf96..d45f9f7ac 100644
--- a/gtsam_unstable/linear/LinearInequality.h
+++ b/gtsam_unstable/linear/LinearInequality.h
@@ -53,7 +53,7 @@ public:
   /** Conversion from JacobianFactor */
   explicit LinearInequality(const JacobianFactor& jf, Key dualKey) : Base(jf), dualKey_(dualKey), active_(true) {
     if (!jf.isConstrained()) {
-      throw std::runtime_error("Cannot convert an unconstrained JacobianFactor to LinearEquality");
+      throw std::runtime_error("Cannot convert an unconstrained JacobianFactor to LinearInequality");
     }
 
     if (jf.get_model()->dim() != 1) {