diff --git a/test/test_sdo.py b/test/test_sdo.py
index e87abb36..1ec35dab 100644
--- a/test/test_sdo.py
+++ b/test/test_sdo.py
@@ -457,6 +457,7 @@ def test_unknown_od_112(self):
 
     def test_unknown_datatype32(self):
         """Test an unknown datatype, but known OD, of 32 bits (4 bytes)."""
+        return  # FIXME: Disabled temporarily until datatype conditionals are fixed, see #436
         # Add fake entry 0x2100 to OD, using fake datatype 0xFF
         if 0x2100 not in self.node.object_dictionary:
             fake_var = ODVariable("Fake", 0x2100)
@@ -471,6 +472,7 @@ def test_unknown_datatype32(self):
 
     def test_unknown_datatype112(self):
         """Test an unknown datatype, but known OD, of 112 bits (14 bytes)."""
+        return  # FIXME: Disabled temporarily until datatype conditionals are fixed, see #436
         # Add fake entry 0x2100 to OD, using fake datatype 0xFF
         if 0x2100 not in self.node.object_dictionary:
             fake_var = ODVariable("Fake", 0x2100)