diff --git a/p4a/pythonforandroid/bdistapk.py b/p4a/pythonforandroid/bdistapk.py
index 5bdd1c68..a27f4d1b 100644
--- a/p4a/pythonforandroid/bdistapk.py
+++ b/p4a/pythonforandroid/bdistapk.py
@@ -123,7 +123,7 @@ class BdistAPK(Command):
             exit(1)
         if len(main_py_dirs) > 1:
             print('WARNING: Multiple main.py dirs found, using the shortest path')
-        main_py_dirs = sorted(main_py_dirs, key=lambda j: len(split(j)))
+        main_py_dirs.sort(key=lambda j: len(split(j)))
 
         if not argv_contains('--launcher'):
             sys.argv.append('--private={}'.format(
@@ -145,4 +145,4 @@ def _set_user_options():
 
     BdistAPK.user_options = user_options
 
-_set_user_options()
\ No newline at end of file
+_set_user_options()
diff --git a/p4a/pythonforandroid/bootstraps/common/build/build.py b/p4a/pythonforandroid/bootstraps/common/build/build.py
index 38fe2b77..342115e0 100644
--- a/p4a/pythonforandroid/bootstraps/common/build/build.py
+++ b/p4a/pythonforandroid/bootstraps/common/build/build.py
@@ -447,8 +447,7 @@ main.py that loads it.''')
     # Try to build with the newest available build tools
     ignored = {".DS_Store", ".ds_store"}
     build_tools_versions = [x for x in listdir(join(sdk_dir, 'build-tools')) if x not in ignored]
-    build_tools_versions = sorted(build_tools_versions,
-                                  key=LooseVersion)
+    build_tools_versions.sort(key=LooseVersion)
     build_tools_version = build_tools_versions[-1]
 
     # Folder name for launcher (used by SDL2 bootstrap)
diff --git a/p4a/pythonforandroid/bootstraps/lbry/build/build.py b/p4a/pythonforandroid/bootstraps/lbry/build/build.py
index 71e5e7c9..584e6ed1 100755
--- a/p4a/pythonforandroid/bootstraps/lbry/build/build.py
+++ b/p4a/pythonforandroid/bootstraps/lbry/build/build.py
@@ -344,8 +344,7 @@ main.py that loads it.''')
 
     # Try to build with the newest available build tools
     build_tools_versions = listdir(join(sdk_dir, 'build-tools'))
-    build_tools_versions = sorted(build_tools_versions,
-                                  key=LooseVersion)
+    build_tools_versions.sort(key=LooseVersion)
     build_tools_version = build_tools_versions[-1]
 
 
diff --git a/p4a/pythonforandroid/graph.py b/p4a/pythonforandroid/graph.py
index 2e98e8cc..646a66e1 100644
--- a/p4a/pythonforandroid/graph.py
+++ b/p4a/pythonforandroid/graph.py
@@ -293,8 +293,7 @@ def get_recipe_order_and_bootstrap(ctx, names, bs=None, blacklist=None):
         orders.append(list(order))
 
     # prefer python3 and SDL2 if available
-    orders = sorted(orders,
-                    key=lambda order: -('python3' in order) - ('sdl2' in order))
+    orders.sort(key=lambda order: -('python3' in order) - ('sdl2' in order))
 
     if not orders:
         raise BuildInterruptingException(
diff --git a/p4a/pythonforandroid/recipes/android/src/android/mixer.py b/p4a/pythonforandroid/recipes/android/src/android/mixer.py
index 303a9530..334f696e 100644
--- a/p4a/pythonforandroid/recipes/android/src/android/mixer.py
+++ b/p4a/pythonforandroid/recipes/android/src/android/mixer.py
@@ -93,9 +93,7 @@ def find_channel(force=False):
     if not force:
         return None
 
-    busy.sort(key=lambda x: x.play_time)
-
-    return busy[0]
+    return min(busy, key=lambda x: x.play_time)
 
 
 class ChannelImpl(object):
diff --git a/p4a/pythonforandroid/toolchain.py b/p4a/pythonforandroid/toolchain.py
index f4ab7f45..6796f94c 100644
--- a/p4a/pythonforandroid/toolchain.py
+++ b/p4a/pythonforandroid/toolchain.py
@@ -822,8 +822,7 @@ class ToolchainCL(object):
 
                 build_tools_versions = os.listdir(join(ctx.sdk_dir,
                                                        'build-tools'))
-                build_tools_versions = sorted(build_tools_versions,
-                                              key=LooseVersion)
+                build_tools_versions.sort(key=LooseVersion)
                 build_tools_version = build_tools_versions[-1]
                 info(('Detected highest available build tools '
                       'version to be {}').format(build_tools_version))
diff --git a/recipes/android/src/android/mixer.py b/recipes/android/src/android/mixer.py
index 4ac224a7..65e106de 100644
--- a/recipes/android/src/android/mixer.py
+++ b/recipes/android/src/android/mixer.py
@@ -79,9 +79,7 @@ def find_channel(force=False):
     if not force:
         return None
 
-    busy.sort(key=lambda x : x.play_time)
-
-    return busy[0]
+    return min(busy, key=lambda x : x.play_time)
 
 class ChannelImpl(object):