diff --git a/install.sh b/install.sh
index 531fe66..50515ab 100644
--- a/install.sh
+++ b/install.sh
@@ -9,11 +9,11 @@ sudo pip install adafruit-pca9685
 sudo apt install vsftpd
 sudo apt install vlc
 sudo modprobe bcm2835-v4l2
-if [hash pip3];then
+if hash pip3; then
     pip install pygame
     exit 0
 fi
-if [hash pip];then
+if hash pip;then
     pip install pygame
     exit 0
 fi
diff --git a/lib/controllib.py b/lib/controllib.py
index d47614d..e27fda5 100644
--- a/lib/controllib.py
+++ b/lib/controllib.py
@@ -21,45 +21,43 @@ class Joystick:
         self.pressed = []
         self.splaying = False
 
+    def _button_check(self, name, i, c, button):
+        """ Checks if a button was pressed and wasn't pressed before. """
+        if i == c[name]:
+            if button == 1 and i not in self.pressed:
+                self.pressed.append(i)
+                return 1
+            elif button == 0 and i in self.pressed:
+                self.pressed.remove(i)
+                return 2
+        return 0
+
     def _handle_buttons(self, axis_dict, c):
         for i in range(self.joystick.get_numbuttons()):
             button = self.joystick.get_button(i)
             axis_dict['Button {}'.format(i)] = button
 
-            if i == c['LIGHT'] and button == 1 and i not in self.pressed:
+            if self._button_check('LIGHT', i, c, button) == 1:
                 self.light.switch()
-                self.pressed.append(i)
-            elif i == c['LIGHT'] and button == 0 and i in self.pressed:
-                self.pressed.remove(i)
 
-            elif i == c['MUSIC'] and button == 1 and i not in self.pressed:
+            elif self._button_check('MUSIC', i, c, button) == 1:
                 if self.splaying:
                     self.sound.stop()
                     self.splaying = False
                 else:
                     self.sound.play()
                     self.splaying = True
-                self.pressed.append(i)
-            elif i == c['MUSIC'] and button == 0 and i in self.pressed:
-                self.pressed.remove(i)
 
-            elif i == c['VOLIN'] and button == 1 and i not in self.pressed:
+            elif self._button_check('VOLIN', i, c, button) == 1:
                 self.sound.set_volume(self.sound.get_volume() + 0.1)
-                self.pressed.append(i)
-            elif i == c['VOLIN'] and button == 0 and i in self.pressed:
+            elif self._button_check('VOLIN', i, c, button) == 2:
                 self.sound.set_volume(self.sound.get_volume() - 0.1)
-                self.pressed.remove(i)
 
-            elif i == c['VOLDE'] and button == 1 and i not in self.pressed:
-                self.pressed.append(i)
-            elif i == c['VOLDE'] and button == 0 and i in self.pressed:
-                self.pressed.remove(i)
+            elif self._button_check('VOLDE', i, c, button):
+                pass
 
-            elif i == c['REC'] and button == 1 and i not in self.pressed:
+            elif self._button_check('REC', i, c, button) == 1:
                 self._save_camimg()
-                self.pressed.append(i)
-            elif i == c['REC'] and button == 0 and i in self.pressed:
-                self.pressed.remove(i)
         return axis_dict
 
     def handle(self):
diff --git a/lib/gyro.py b/lib/gyro.py
index 33d1d51..9e6eaac 100644
--- a/lib/gyro.py
+++ b/lib/gyro.py
@@ -26,8 +26,7 @@ def read_word_2c(reg):
     val = read_word(reg)
     if val >= 0x8000:
         return -((65535 - val) + 1)
-    else:
-        return val
+    return val
 
 
 def dist(a, b):