diff --git a/info2praktikum-neuronalesnetz/matrix.c b/info2praktikum-neuronalesnetz/matrix.c
index 3b12a13..75c311b 100644
--- a/info2praktikum-neuronalesnetz/matrix.c
+++ b/info2praktikum-neuronalesnetz/matrix.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+
 #include <string.h>
 #include "matrix.h"
 
@@ -9,9 +10,9 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
   Matrix matrix;
   matrix.rows = rows;
   matrix.cols = cols;
-  matrix.data = (MatrixType *)malloc(rows * cols * sizeof(MatrixType));
+  matrix.data = (float *)malloc(rows * cols * sizeof(MatrixType));
   if (matrix.data != NULL) {
-    printf("Matrix can not be created\n");
+
   }
   return matrix;
 }
diff --git a/info2praktikum-neuronalesnetz/matrix.h b/info2praktikum-neuronalesnetz/matrix.h
index f38b8a5..0598348 100644
--- a/info2praktikum-neuronalesnetz/matrix.h
+++ b/info2praktikum-neuronalesnetz/matrix.h
@@ -6,13 +6,12 @@
 typedef struct{
   size_t rows;
   size_t cols;
-  double* data;
+  float* data;
  } Matrix;
 
 
 typedef float MatrixType;
 
-// TODO Matrixtyp definieren
 
 
 Matrix createMatrix(unsigned int rows, unsigned int cols);