diff --git a/gtsam/base/Testable.h b/gtsam/base/Testable.h
index 8eb6326c0..eb8d851d1 100644
--- a/gtsam/base/Testable.h
+++ b/gtsam/base/Testable.h
@@ -41,6 +41,7 @@
 #include <string>
 
 #define GTSAM_PRINT(x)((x).print(#x))
+#define GTSAM_COUT(x) (std::cout << #x ": " << x << std::endl)
 
 namespace gtsam {