diff --git a/matrix.c b/matrix.c
index 8350e08..9556fac 100644
--- a/matrix.c
+++ b/matrix.c
@@ -147,7 +147,6 @@ Matrix add(const Matrix matrix1, const Matrix matrix2)
         
 
     //size of the matrices should be the same, if the addition is supposed to happen
-    // Matrix outputMatrix = createMatrix(matrix1.rows, matrix1.cols);
     Matrix outputMatrix = createMatrix(matrix1.rows, matrix1.cols);
 
     if(!outputMatrix.buffer){
@@ -212,16 +211,12 @@ Matrix multiply(const Matrix matrix1, const Matrix matrix2)
     //Matrix outputMatrix = createMatrix(matrix2.cols, matrix1.rows);
     for(int i = 0; i < matrix1.rows; i++) {
         for (int j = 0; j < matrix2.cols; j++) {
-            MatrixType sum = 0;
-
             for (int k = 0; k < matrix1.cols; k++) {
                 // how this should work in normal Matrix version:
                 // outputMatrix.buffer[i][j] = matrix1.buffer[i][k] * matrix2.buffer[k][j];
                 //outputMatrix.buffer[i + outputMatrix.rows * j] += matrix1.buffer[i + matrix1.rows * k] * matrix2.buffer[k + matrix2.rows * j];
-                sum += matrix1.buffer[i * matrix1.cols + k] * matrix2.buffer[j + matrix2.cols * k];
+                outputMatrix.buffer[i * outputMatrix.cols + j] += matrix1.buffer[i * matrix1.cols + k] * matrix2.buffer[j + matrix2.cols * k];
             }
-            outputMatrix.buffer[i * outputMatrix.cols + j] = sum;
-
         }
     }
     return outputMatrix;