diff --git a/chapter11/subsequence.py b/chapter11/subsequence.py
index 8b85001..cc4bf3f 100644
--- a/chapter11/subsequence.py
+++ b/chapter11/subsequence.py
@@ -42,13 +42,13 @@ X = "fosh"
 Y = "fort"
 
 logger.info(f"words: {X} {Y}")
-longest_subsequence = longest_common_subsequence(X, Y, len(X), len(Y))
-print(f"Longest common subsequence: {longest_subsequence}")
+length = longest_common_subsequence(X, Y, len(X), len(Y))
+print(f"Longest common subsequence: {length}")
 
 
 X = "fosh"
 Y = "fish"
 
 logger.info(f"words: {X} {Y}")
-longest_subsequence = longest_common_subsequence(X, Y, len(X), len(Y))
-print(f"Longest common subsequence: {longest_subsequence}")
+length = longest_common_subsequence(X, Y, len(X), len(Y))
+print(f"Longest common subsequence: {length}")
diff --git a/chapter11/substring.py b/chapter11/substring.py
index e45ee76..c1d9f85 100644
--- a/chapter11/substring.py
+++ b/chapter11/substring.py
@@ -45,13 +45,13 @@ X = "fish"
 Y = "vish"
 
 logger.info(f"words: {X} {Y}")
-longest_substring = longest_common_substring(X, Y, len(X), len(Y))
-print(f"Longest common substring: {longest_substring}")
+length = longest_common_substring(X, Y, len(X), len(Y))
+print(f"Longest common substring: {length}")
 
 
 X = "vista"
 Y = "hish"
 
 logger.info(f"words: {X} {Y}")
-longest_substring = longest_common_substring(X, Y, len(X), len(Y))
-print(f"Longest common substring: {longest_substring}")
+length = longest_common_substring(X, Y, len(X), len(Y))
+print(f"Longest common substring: {length}")
diff --git a/chapter12/loaves.py b/chapter12/loaves.py
index 6206f69..4581471 100644
--- a/chapter12/loaves.py
+++ b/chapter12/loaves.py
@@ -47,10 +47,10 @@ K = 4
 
 k_nearest = knn(point, neighbours)
 
-average_sold = 0
+total = 0
 for n in k_nearest:
-    average_sold += n.sold
-average_sold = average_sold / K
+    total += n.sold
+average = total / K
 
-logger.debug(average_sold)
-print(f"Number of loaves to make: {int(round(average_sold, 0))}")
+logger.debug(average)
+print(f"Number of loaves to make: {int(round(average, 0))}")