diff --git a/gtsam/inference/FactorGraph-inl.h b/gtsam/inference/FactorGraph-inl.h
index 14208c679..173f67c2e 100644
--- a/gtsam/inference/FactorGraph-inl.h
+++ b/gtsam/inference/FactorGraph-inl.h
@@ -22,11 +22,9 @@
 
 #pragma once
 
-#include <stdio.h>
-#include <list>
-#include <sstream>
-#include <stdexcept>
-#include <functional>
+#include <gtsam/inference/FactorGraph.h>
+#include <gtsam/inference/graph-inl.h>
+#include <gtsam/base/DSF.h>
 
 #include <boost/foreach.hpp>
 #include <boost/tuple/tuple.hpp>
@@ -36,9 +34,11 @@
 #include <boost/graph/prim_minimum_spanning_tree.hpp>
 #include <boost/iterator/transform_iterator.hpp>
 
-#include <gtsam/inference/FactorGraph.h>
-#include <gtsam/inference/graph-inl.h>
-#include <gtsam/base/DSF.h>
+#include <stdio.h>
+#include <list>
+#include <sstream>
+#include <stdexcept>
+#include <functional>
 
 #define INSTANTIATE_FACTOR_GRAPH(F) \
   template class FactorGraph<F>; \
@@ -55,7 +55,7 @@ namespace gtsam {
 		cout << "size: " << size() << endl;
 		for (size_t i = 0; i < factors_.size(); i++) {
 			stringstream ss;
-			ss << "factor " << i;
+			ss << "factor " << i << ": ";
 			if (factors_[i] != NULL) factors_[i]->print(ss.str());
 		}
 	}
diff --git a/gtsam/slam/PriorFactor.h b/gtsam/slam/PriorFactor.h
index 5bb22506f..33f3d1aef 100644
--- a/gtsam/slam/PriorFactor.h
+++ b/gtsam/slam/PriorFactor.h
@@ -15,8 +15,8 @@
  **/
 #pragma once
 
-#include <gtsam/base/Testable.h>
 #include <gtsam/nonlinear/NonlinearFactor.h>
+#include <gtsam/base/Testable.h>
 
 namespace gtsam {
 
@@ -63,7 +63,7 @@ namespace gtsam {
 
 		/** print */
 		virtual void print(const std::string& s) const {
-			std::cout << s << ": PriorFactor(" << (std::string) this->key_ << ")\n";
+			std::cout << s << "PriorFactor(" << (std::string) this->key_ << ")\n";
 			prior_.print("  prior");
 			this->noiseModel_->print("  noise model");
 		}