diff --git a/sw/utility/simulation.py b/sw/utility/simulation.py
index 1a4450a..6f64d57 100644
--- a/sw/utility/simulation.py
+++ b/sw/utility/simulation.py
@@ -180,9 +180,12 @@ class Simulator:
             adj_num_iterations = self._curr_num_iterations - \
                                  self._curr_num_dec_fails
 
-            self._BERs[self._curr_decoder_index][self._curr_SNRs_index] \
-                = self._curr_num_bit_errors / (
-                    adj_num_iterations * self._n)
+            if adj_num_iterations == 0:
+                self._BERs[self._curr_decoder_index][self._curr_SNRs_index] = 1
+            else:
+                self._BERs[self._curr_decoder_index][self._curr_SNRs_index] \
+                    = self._curr_num_bit_errors / (
+                        adj_num_iterations * self._n)
 
             self._dec_fails[self._curr_decoder_index][self._curr_SNRs_index] \
                 = self._curr_num_dec_fails