diff --git a/armi/reactor/blockParameters.py b/armi/reactor/blockParameters.py
index 478c2cda8..54ba57ba5 100644
--- a/armi/reactor/blockParameters.py
+++ b/armi/reactor/blockParameters.py
@@ -449,7 +449,7 @@ def xsTypeNum(self, value):
 
         pb.defParam(
             "fuelWorth",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Reactivity worth of fuel material per unit mass",
         )
 
@@ -491,13 +491,13 @@ def xsTypeNum(self, value):
 
         pb.defParam(
             "coolantWorth",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Reactivity worth of coolant material per unit mass",
         )
 
         pb.defParam(
             "cladWorth",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Reactivity worth of clad material per unit mass",
         )
 
@@ -623,7 +623,7 @@ def xsTypeNum(self, value):
         # FUEL COEFFICIENTS
         pb.defParam(
             "rxFuelDensityCoeffPerMass",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Fuel Density Coefficient",
         )
 
@@ -641,20 +641,20 @@ def xsTypeNum(self, value):
 
         pb.defParam(
             "rxFuelTemperatureCoeffPerMass",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Fuel Temperature Coefficient",
         )
 
         pb.defParam(
             "rxFuelVoidedTemperatureCoeffPerMass",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Fuel Voided-Coolant Temperature Coefficient",
         )
 
         # CLAD COEFFICIENTS
         pb.defParam(
             "rxCladDensityCoeffPerMass",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Clad Density Coefficient",
         )
 
@@ -666,14 +666,14 @@ def xsTypeNum(self, value):
 
         pb.defParam(
             "rxCladTemperatureCoeffPerMass",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Clad Temperature Coefficient",
         )
 
         # STRUCTURE COEFFICIENTS
         pb.defParam(
             "rxStructureDensityCoeffPerMass",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Structure Density Coefficient",
         )
 
@@ -685,20 +685,20 @@ def xsTypeNum(self, value):
 
         pb.defParam(
             "rxStructureTemperatureCoeffPerMass",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Structure Temperature Coefficient",
         )
 
         # COOLANT COEFFICIENTS
         pb.defParam(
             "rxCoolantDensityCoeffPerMass",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Coolant Density Coefficient",
         )
 
         pb.defParam(
             "rxCoolantTemperatureCoeffPerMass",
-            units=f"{units.REACTIVITY}/{units.KG})",
+            units=f"{units.REACTIVITY}/{units.KG}",
             description="Coolant Temperature Coefficient",
         )