diff --git a/sw/utility/simulation.py b/sw/utility/simulation.py
index b0b7fe8..84cf7fb 100644
--- a/sw/utility/simulation.py
+++ b/sw/utility/simulation.py
@@ -221,7 +221,18 @@ class Simulator:
             [BER_decoder_1, BER_decoder_2, ...]
         """
         SNRs = np.array(self._SNRs)
-        BERs = [np.array(BER_array) for BER_array in self._BERs]
+
+        # If the BERs of a decoder have not been calculated for all SNRs,
+        # fill the rest up with zeros to match the length of the 'SNRs' array
+        BERs = []
+        for decoder_BER_list in self._BERs:
+            padded = np.pad(decoder_BER_list, (0, len(self._SNRs) - len(decoder_BER_list)))
+            BERs.append(padded)
+
+        # If the BERs have not been calculated for all decoders, fill up the BERs list
+        # with zero-vectors to match the length of the 'decoders' list
+        for i in range(len(self._decoders) - len(BERs)):
+            BERs.append(np.zeros(len(self._SNRs)))
 
         return SNRs, BERs