diff --git a/1ano/1semestre/fp/aula02/age.py b/1ano/1semestre/fp/aula02/age.py
index 0b17f82..f43cbfe 100755
--- a/1ano/1semestre/fp/aula02/age.py
+++ b/1ano/1semestre/fp/aula02/age.py
@@ -16,7 +16,7 @@ print("Age:", age)
 
 if age < 13:
     cat = "child"
-elif 13 < age < 20:
+elif age < 20:
     cat = "teenager"
 else:
     cat = "grown-up"
diff --git a/1ano/1semestre/fp/aula05/shorten.py b/1ano/1semestre/fp/aula05/shorten.py
index 0541025..4d2c969 100755
--- a/1ano/1semestre/fp/aula05/shorten.py
+++ b/1ano/1semestre/fp/aula05/shorten.py
@@ -4,11 +4,7 @@ def main():
 
 
 def shorten(string):
-    abv = ''
-    for char in string:
-        if char.isupper():
-            abv += char
-    return abv
+    return ''.join([char for char in string if char.isupper()])
 
 
 if __name__ == "__main__":