diff --git a/gtsam/slam/PriorFactor.h b/gtsam/slam/PriorFactor.h
index 094065336..0d0497132 100644
--- a/gtsam/slam/PriorFactor.h
+++ b/gtsam/slam/PriorFactor.h
@@ -65,8 +65,8 @@ namespace gtsam {
 
 		/** print */
 		virtual void print(const std::string& s, const KeyFormatter& keyFormatter = DefaultKeyFormatter) const {
-			std::cout << s << "PriorFactor(" << keyFormatter(this->key()) << ")\n";
-			prior_.print("  prior");
+			std::cout << s << "PriorFactor on " << keyFormatter(this->key()) << ", prior value:\n";
+			prior_.print();
 			this->noiseModel_->print("  noise model: ");
 		}