diff --git a/qadence/blocks/matrix.py b/qadence/blocks/matrix.py
index e66a2650..a146ba5c 100644
--- a/qadence/blocks/matrix.py
+++ b/qadence/blocks/matrix.py
@@ -75,10 +75,10 @@ def __init__(
             raise TypeError("Please provide a 2D matrix.")
         if not self.is_square(matrix):
             raise TypeError("Please provide a square matrix.")
-        if check_unitary:
+        if check_hermitian:
             if not self.is_hermitian(matrix):
                 logger.warning("Provided matrix is not hermitian.")
-        if check_hermitian:
+        if check_unitary:
             if not self.is_unitary(matrix):
                 logger.warning("Provided matrix is not unitary.")
         self.matrix = matrix.clone()