diff --git a/src/Matrix.cpp b/src/Matrix.cpp
index 0449e8d..f129fde 100644
--- a/src/Matrix.cpp
+++ b/src/Matrix.cpp
@@ -531,7 +531,7 @@ void Matrix<rows, columns>::QRDecomposition(Matrix<rows, columns> &Q,
   Q.Fill(0);
   R.Fill(0);
   Matrix<rows, 1> a_col, e, u, Q_column_k{};
-  Matrix<1, rows> a_T, e_T{};
+  Matrix<1, rows> e_T{};
 
   for (uint8_t column = 0; column < columns; column++) {
     this->GetColumn(column, a_col);
diff --git a/unit-tests/matrix-timing-tests.cpp b/unit-tests/matrix-timing-tests.cpp
index 0722e0c..e736993 100644
--- a/unit-tests/matrix-timing-tests.cpp
+++ b/unit-tests/matrix-timing-tests.cpp
@@ -76,7 +76,8 @@ TEST_CASE("Timing Tests", "Matrix") {
 
   SECTION("Determinant") {
     for (uint32_t i{0}; i < 1000000; i++) {
-      float det1 = mat4.Det();
+      float det = mat4.Det();
+      (void)det;
     }
   }