diff --git a/PKGBUILD b/PKGBUILD
index 734764c..01ac9b0 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -11,9 +11,9 @@ conflicts=('pycharm' 'pycharm-community-edition')
 provides=('pycharm')
 license=('custom')
 backup=(
-    opt/$pkgname/bin/pycharm.vmoptions 
-    opt/$pkgname/bin/pycharm64.vmoptions
-    opt/$pkgname/bin/idea.properties
+    "opt/$pkgname/bin/pycharm.vmoptions"
+    "opt/$pkgname/bin/pycharm64.vmoptions"
+    "opt/$pkgname/bin/idea.properties"
 )
 depends=('giflib' 'glibc' 'sh' 'ttf-font' 'libxtst' 'libxslt' 'python')
 source=("https://download.jetbrains.com/python/$pkgname-$_pkgver.tar.gz"
@@ -49,37 +49,37 @@ optdepends=('ttf-jetbrains-mono: Official mono font by JetBrains'
             'python-docutils-stubs: For build documentation with sphynx')
             
 build() {
-  cd pycharm-$_pkgver
+  cd "pycharm-$_pkgver"
 
   # compile PyDev debugger used by PyCharm to speedup debugging
   python3 plugins/python/helpers/pydev/setup_cython.py build_ext --build-temp build --build-lib .
   
-  rm -rf bin/fsnotifier{,-arm} lib/libpty/linux/x86
+  rm -r bin/fsnotifier{,-arm} lib/libpty/linux/x86
 }
 
 package() {
   # workaround FS#40934
-  sed -i 's/lcd/on/' pycharm-$_pkgver/bin/*.vmoptions
+  sed -i "s/lcd/on/" "pycharm-$_pkgver/bin/*.vmoptions"
 
   # base
-  install -dm 755 $pkgdir/opt/$pkgname
-  cp -dr --no-preserve=ownership pycharm-$_pkgver/* $pkgdir/opt/$pkgname/
-  install -dm 755 $pkgdir/usr/share/{applications,pixmaps}
-  install -Dm 644 $pkgdir/opt/$pkgname/bin/pycharm.png $pkgdir/usr/share/pixmaps/pycharm.png
-  install -Dm 644 pycharm-professional.desktop $pkgdir/usr/share/applications/
+  install -dm 755 "$pkgdir/opt/$pkgname"
+  cp -dr --no-preserve=ownership "pycharm-$_pkgver/*" "$pkgdir/opt/$pkgname/"
+  install -dm 755 "$pkgdir/usr/share/{applications,pixmaps}"
+  install -Dm 644 "$pkgdir/opt/$pkgname/bin/pycharm.png" "$pkgdir/usr/share/pixmaps/pycharm.png"
+  install -Dm 644 pycharm-professional.desktop "$pkgdir/usr/share/applications/"
   
   # remove internal fonts, instead use system fonts
-  rm -rf $pkgdir/opt/pycharm-professional/jbr/lib/fonts
+  rm -r "$pkgdir/opt/pycharm-professional/jbr/lib/fonts"
   
   # exec
-  install -dm 755 $pkgdir/usr/bin/
-  install -Dm 755 pycharm $pkgdir/usr/bin/
+  install -dm 755 "$pkgdir/usr/bin/"
+  install -Dm 755 pycharm "$pkgdir/usr/bin/"
   
   # licenses
-  install -dm 755 $pkgdir/usr/share/licenses/$pkgname/
-  cp -dr --no-preserve=ownership pycharm-$_pkgver/license/* $pkgdir/usr/share/licenses/$pkgname/
+  install -dm 755 "$pkgdir/usr/share/licenses/$pkgname/"
+  cp -dr --no-preserve=ownership "pycharm-$_pkgver/license/*" "$pkgdir/usr/share/licenses/$pkgname/"
   
   # install charm application - for edit a single file in Pycharm
-  install -Dm 755 charm $pkgdir/usr/bin/
-  install -Dm 644 charm.desktop $pkgdir/usr/share/applications/
+  install -Dm 755 charm "$pkgdir/usr/bin/"
+  install -Dm 644 charm.desktop "$pkgdir/usr/share/applications/"
 }