diff --git a/idaes_examples/mod/hda/hda_ideal_VLE.py b/idaes_examples/mod/hda/hda_ideal_VLE.py
index b6c3207e..08bcc3d7 100644
--- a/idaes_examples/mod/hda/hda_ideal_VLE.py
+++ b/idaes_examples/mod/hda/hda_ideal_VLE.py
@@ -550,7 +550,7 @@ def fix_initialization_states(blk):
 
         # Also need to deactivate sum of mole fraction constraint
         for k in blk.values():
-            if not k.config.defined_state:
+            if not k.config.defined_state and k.config.has_phase_equilibrium:
                 k.equilibrium_constraint.deactivate()