diff --git a/devsupApp/src/dbapi.c b/devsupApp/src/dbapi.c
index 200e4f4..bff2e7f 100644
--- a/devsupApp/src/dbapi.c
+++ b/devsupApp/src/dbapi.c
@@ -269,7 +269,11 @@ static struct PyModuleDef dbapimodule = {
 };
 #endif
 
+#if PY_MAJOR_VERSION >= 3
+PyMODINIT_FUNC PyInit__dbapi(void)
+#else
 PyMODINIT_FUNC init_dbapi(void)
+#endif
 {
     PyObject *mod = NULL, *hookdict, *vertup;
     pystate *st;
diff --git a/devsupApp/src/devsup/__init__.py b/devsupApp/src/devsup/__init__.py
index ea6c48b..a84fcf8 100644
--- a/devsupApp/src/devsup/__init__.py
+++ b/devsupApp/src/devsup/__init__.py
@@ -52,7 +52,7 @@ device(mbboDirect, INST_IO, pydevsupComOut, "Python Device")
 device(waveform, INST_IO, pydevsupComIn, "Python Device")
 device(aai, INST_IO, pydevsupComIn, "Python Device")
 device(aao, INST_IO, pydevsupComOut, "Python Device")
-""")
+""".encode('ascii'))
         F.flush()
         _dbapi.dbReadDatabase(F.name)
     _dbapi._dbd_setup()
diff --git a/devsupApp/src/devsup/test/test_db.py b/devsupApp/src/devsup/test/test_db.py
index f543439..811292a 100644
--- a/devsupApp/src/devsup/test/test_db.py
+++ b/devsupApp/src/devsup/test/test_db.py
@@ -23,7 +23,7 @@ class IOCHelper(unittest.TestCase):
 
         if self.db is not None:
             with tempfile.NamedTemporaryFile() as F:
-                F.write(self.db)
+                F.write(self.db.encode('ascii'))
                 F.flush()
                 _dbapi.dbReadDatabase(F.name)
 
@@ -159,7 +159,8 @@ class TestField(IOCHelper):
 
             rec.VAL = ["zero", "", "one", "This is a really long string which should be truncated", "", "last"]
 
-            assert_array_equal(rec.VAL, ["zero", "", "one", "This is a really long string which shoul", "", "last"])
+            assert_array_equal(rec.VAL,
+                                numpy.asarray(["zero", "", "one", "This is a really long string which shoul", "", "last"], dtype='S40'))
 
 
 class TestDset(IOCHelper):