diff --git a/matrix.c b/matrix.c
index a2786d6..1f6755a 100644
--- a/matrix.c
+++ b/matrix.c
@@ -44,7 +44,12 @@ MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int co
 {
     MatrixType value = 0;
 
-    return value = matrix.buffer[rowIdx * matrix.cols + colIdx]; // hole Wert value am Punkt (row col)
+    if (rowIdx < matrix.rows && colIdx < matrix.cols)
+    {
+        value = matrix.buffer[rowIdx * matrix.cols + colIdx]; // hole Wert value am Punkt (row col)
+    }
+
+    return value;
 }
 
 Matrix add(const Matrix matrix1, const Matrix matrix2)