diff --git a/matrix.c b/matrix.c
index df12e0b..d24b836 100644
--- a/matrix.c
+++ b/matrix.c
@@ -23,8 +23,8 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
 
 void clearMatrix(Matrix *matrix)
 {
-    free(matrix.buffer);
-	matrix.buffer = NULL;
+    free(matrix->buffer);
+	matrix->buffer = NULL;
 }
 
 void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
@@ -55,8 +55,7 @@ Matrix add(const Matrix matrix1, const Matrix matrix2)
     Matrix MatrixErgebnis = createMatrix(matrix1.rows, matrix1.cols); //Creating Result Matrix
     if(matrix1.cols != matrix2.cols || matrix1.rows != matrix2.rows){
         printf("Matrix dimensions do not match\n"); //Error Message if dimensions of Input Matrixes are not identical
-        clearMatrix(MatrixErgebnis);
-        MatrixErgebnis = NULL;
+        clearMatrix(&MatrixErgebnis);
         return MatrixErgebnis;
     }
     else{