diff --git a/SConstruct b/SConstruct
index ef4dda1e0..7b3152052 100644
--- a/SConstruct
+++ b/SConstruct
@@ -1,4 +1,10 @@
+import sys
 #run generator.py
+if sys.version_info[0] >= 3:
+	def execfile(path):
+		with open(path, 'r') as f:
+			exec(f.read())
+
 if not GetOption('clean'):
 	execfile("generator.py")