diff --git a/config/common.gypi b/config/common.gypi
index d29d907ce..104ae6e92 100644
--- a/config/common.gypi
+++ b/config/common.gypi
@@ -2,7 +2,7 @@
     'includes': [],
     'type': 'shared_library',
     'variables': {
-        'qt_home_dir': '/usr/local/Cellar/qt/5.12.1',
+        'qt_home_dir%': "<(QT_INSTALL_DIR)",
     },
     'target_defaults': {
         'cflags!': ['-fno-exceptions'],