diff --git a/src/scripts/pycompare.py b/src/scripts/pycompare.py
index 546486a3c09e9848f15231326358498786ab315f..4fcdc1216901e7d8c4022d25f63ac91cf33721d4 100755
--- a/src/scripts/pycompare.py
+++ b/src/scripts/pycompare.py
@@ -317,13 +317,13 @@ def mismatch_severities(str_f_values, str_c_values, config):
         max_f_log = -1.0e12
         max_c_log = -1.0e12
         for si in range(len(f_values)):
-            if (f_values[i] != 0):
-                sign = 1.0 if f_values[i] > 0.0 else -1.0
-                log_f_value = log10(sign * f_values[i])
+            if (f_values[si] != 0):
+                sign = 1.0 if f_values[si] > 0.0 else -1.0
+                log_f_value = log10(sign * f_values[si])
                 if (log_f_value > max_f_log): max_f_log = log_f_value
-            if (c_values[i] != 0):
-                sign = 1.0 if c_values[i] > 0.0 else -1.0
-                log_c_value = log10(sign * c_values[i])
+            if (c_values[si] != 0):
+                sign = 1.0 if c_values[si] > 0.0 else -1.0
+                log_c_value = log10(sign * c_values[si])
                 if (log_c_value > max_c_log): max_c_log = log_c_value
         if (max_f_log == -1.0e12): max_f_log = 0.0
         if (max_c_log == -1.0e12): max_c_log = 0.0