diff --git a/matrix.c b/matrix.c
index 4ed32c9..8fec4b7 100644
--- a/matrix.c
+++ b/matrix.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include <stdio.h>
 #include <string.h>
 #include "matrix.h"
 
@@ -6,11 +7,20 @@
 
 Matrix createMatrix(unsigned int rows, unsigned int cols)
 {
-    Matrix matrix;
-    matrix.rows = rows;
-    matrix.cols = cols;
-    matrix.buffer = (float*) calloc(rows * cols, sizeof(float));
-    return matrix;
+    if (rows != 0 && cols != 0){
+        Matrix matrix;
+        matrix.rows = rows;
+        matrix.cols = cols;
+        matrix.buffer = (float*) calloc(rows * cols, sizeof(float)); //belegt den speicherplatz mit calloc
+        return matrix;
+    }else{
+        printf("Nullgroesse der Matrix!!!\n");
+        Matrix matrix;
+        matrix.rows = 0;
+        matrix.cols = 0;
+        matrix.buffer = NULL;
+        return matrix;
+    }
 }
 
 void clearMatrix(Matrix *matrix)