diff --git a/hammer/common/cadence/__init__.py b/hammer/common/cadence/__init__.py
index e64bd6afc..e805e516a 100644
--- a/hammer/common/cadence/__init__.py
+++ b/hammer/common/cadence/__init__.py
@@ -13,6 +13,7 @@
 
 class CadenceTool(HasSDCSupport, HasCPFSupport, HasUPFSupport, TCLTool, HammerTool):
     """Mix-in trait with functions useful for Cadence-based tools."""
+
     constraint_mode = "my_constraint_mode"
 
     @property
diff --git a/hammer/par/innovus/__init__.py b/hammer/par/innovus/__init__.py
index 99988342b..4d61623e5 100644
--- a/hammer/par/innovus/__init__.py
+++ b/hammer/par/innovus/__init__.py
@@ -563,8 +563,8 @@ def place_opt_design(self) -> bool:
         if self.hierarchical_mode.is_nonleaf_hierarchical():
             self.verbose_append('''
             flatten_ilm
-            update_constraint_mode -name my_constraint_mode -ilm_sdc_files {sdc}
-            '''.format(sdc=self.post_synth_sdc), clean=True)
+            update_constraint_mode -name {name} -ilm_sdc_files {sdc}
+            '''.format(name=self.constraint_mode, sdc=self.post_synth_sdc), clean=True)
 
         # Use place_opt_design V2 (POD-Turbo). Option must be explicitly set only in 22.1.
         if self.version() >= self.version_number("221") and self.version() < self.version_number("231"):