diff --git a/src/Quox/Syntax/DimEq.idr b/src/Quox/Syntax/DimEq.idr
index b1327c4..dc703b8 100644
--- a/src/Quox/Syntax/DimEq.idr
+++ b/src/Quox/Syntax/DimEq.idr
@@ -25,6 +25,10 @@ data DimEq : Nat -> Type where
 %name DimEq eqs
 
 
+export
+zeroEq : DimEq 0
+zeroEq = C [<]
+
 export
 new' : (d : Nat) -> DimEq' d
 new' 0     = [<]