diff --git a/Makefile b/Makefile
index 2afb13a..6b1080b 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ all: bindings
 	python setup.py build
 
 bindings:
-	swig3.0 -python wiringpi.i
+	swig3.0 -python -threads wiringpi.i
 
 install:
 	sudo python setup.py install
diff --git a/wiringpi.i b/wiringpi.i
index 0988f69..736fd89 100644
--- a/wiringpi.i
+++ b/wiringpi.i
@@ -1,6 +1,11 @@
 %module wiringpi2
 
 %{
+#if PY_MAJOR_VERSION >= 3
+#define PyInt_AS_LONG PyLong_AsLong
+#define PyString_FromStringAndSize PyBytes_FromStringAndSize
+#endif
+
 #include "WiringPi/wiringPi/wiringPi.h"
 #include "WiringPi/wiringPi/wiringPiI2C.h"
 #include "WiringPi/wiringPi/wiringPiSPI.h"