diff --git a/matrix.c b/matrix.c
index 66a3b4a..ac8c915 100644
--- a/matrix.c
+++ b/matrix.c
@@ -6,13 +6,18 @@
 
 Matrix createMatrix(unsigned int rows, unsigned int cols)
 {
-    MatrixType*data= malloc(rows*cols*sizeof(MatrixType));
+    MatrixType*data= malloc(rows*cols*sizeof(MatrixType));  //Speicher reservieren
     Matrix newMatrix = {rows,cols,data};
     return newMatrix;
 }
 
 void clearMatrix(Matrix *matrix)
 {
+    matrix->data = UNDEFINED_MATRIX_VALUE;        //Auf 0 setzen
+    matrix->rows = UNDEFINED_MATRIX_VALUE;
+    matrix->cols = UNDEFINED_MATRIX_VALUE;
+
+    free((*matrix).data); //Speicher freigeben
     
 }