diff --git a/sw/utility/codes.py b/sw/utility/codes.py
index af34ba0..efb6c66 100644
--- a/sw/utility/codes.py
+++ b/sw/utility/codes.py
@@ -238,7 +238,7 @@ def get_systematic_H(G: np.array) -> np.array:
 
     P = G[:, k:]
 
-    H = np.zeros(shape=(n - k, k + n - k))
+    H = np.zeros(shape=(n - k, n))
     H[:, :k] = P.T
     H[:, k:] = np.identity(n - k)
 
diff --git a/sw/utility/simulations.py b/sw/utility/simulations.py
index ab8ebbf..419c404 100644
--- a/sw/utility/simulations.py
+++ b/sw/utility/simulations.py
@@ -29,8 +29,8 @@ def test_decoder(n: int,
 
     This function assumes the all-zeros assumption holds. Progress is printed to stdout.
 
-    :param n: Length of a codeword of the used code (n_cols of the H-matrix)
-    :param k: Length of a dataword of the used code (n_rows of the H-matrix)
+    :param n: Length of a codeword of the used code
+    :param k: Length of a dataword of the used code
     :param decoder: Instance of the decoder to be tested
     :param SNRs: List of SNRs for which the BER should be calculated
     :param target_frame_errors: Number of frame errors after which to stop the simulation
@@ -88,8 +88,8 @@ def test_decoders(n: int,
 
     This function assumes the all-zeros assumption holds. Progress is printed to stdout.
 
-    :param n: Length of a codeword of the used code (n_cols of the H-matrix)
-    :param k: Length of a dataword of the used code (n_rows of the H-matrix)
+    :param n: Length of a codeword of the used code
+    :param k: Length of a dataword of the used code
     :param decoders: List of decoder objects to be tested
     :param SNRs: List of SNRs for which the BER should be calculated
     :param target_frame_errors: Number of frame errors after which to stop the simulation