diff --git a/setup.py b/setup.py
index 1a0d912..1906a07 100644
--- a/setup.py
+++ b/setup.py
@@ -10,6 +10,14 @@
 
 cfg = sipconfig.Configuration()
 pyqt_sip_dir = cfg.default_sip_dir
+for p in (os.path.join(pyqt_sip_dir, "PyQt5"),
+          os.path.join(pyqt_sip_dir, "PyQt5-3"),
+          os.path.join(pyqt_sip_dir, "PyQt4"),
+          pyqt_sip_dir,
+          os.path.join(cfg.default_mod_dir, "PyQt5", "bindings")):
+    if os.path.exists(os.path.join(p, "QtCore", "QtCoremod.sip")):
+        pyqt_sip_dir = p
+        break
 
 try:
     import PyQt5