diff --git a/cpp/tensorInterface.h b/cpp/tensorInterface.h
index 8fddc1de3..0f41ce365 100644
--- a/cpp/tensorInterface.h
+++ b/cpp/tensorInterface.h
@@ -6,7 +6,7 @@
  */
 
 #include "tensors.h"
-#include "Matrix.h""
+#include "Matrix.h"
 
 namespace gtsam {