diff --git a/src/Matrix.cpp b/src/Matrix.cpp
index 22199fe..f73901e 100644
--- a/src/Matrix.cpp
+++ b/src/Matrix.cpp
@@ -884,7 +884,7 @@ namespace Aurora {
         } else if (aOther.isVector()) {
             // right size
             if (getDimSize(1) == aOther.getDimSize(0)) {
-                auto result = deepCopy();
+                auto result = aOther.deepCopy();
                 cblas_dgemv(CblasColMajor, CblasNoTrans, getDimSize(0),
                             getDimSize(1), 1.0, getData(),
                             getDimSize(0), aOther.getData(), 1, 0,