diff --git a/gtsam/geometry/Rot2.cpp b/gtsam/geometry/Rot2.cpp
index 25c319345..47fd24ca0 100644
--- a/gtsam/geometry/Rot2.cpp
+++ b/gtsam/geometry/Rot2.cpp
@@ -44,7 +44,7 @@ Rot2 Rot2::atan2(double y, double x) {
 
 /* ************************************************************************* */
 void Rot2::print(const string& s) const {
-	cout << s << ":" << theta() << endl;
+	cout << s << ": " << theta() << endl;
 }
 
 /* ************************************************************************* */