diff --git a/infer/src/IR/Fieldname.re b/infer/src/IR/Fieldname.re
index 9633521db..0c41ec3a4 100644
--- a/infer/src/IR/Fieldname.re
+++ b/infer/src/IR/Fieldname.re
@@ -99,16 +99,6 @@ let java_get_field fn => {
 };
 
 
-/** Equality for field names ignoring the struct or class which contains the field. */
-let equal_modulo_parent x y =>
-  switch (x, y) {
-  | (Hidden, Hidden) => true
-  | (Clang a, Clang b) => Int.equal 0 (compare_clang_field_info a b)
-  | (Java _, Java _) => String.equal (java_get_field x) (java_get_field y)
-  | _ => false
-  };
-
-
 /** Check if the field is the synthetic this$n of a nested class, used to access the n-th outher instance. */
 let java_is_outer_instance fn => {
   let fn = to_string fn;
diff --git a/infer/src/IR/Fieldname.rei b/infer/src/IR/Fieldname.rei
index 9b398ed48..d8a7e71cf 100644
--- a/infer/src/IR/Fieldname.rei
+++ b/infer/src/IR/Fieldname.rei
@@ -17,10 +17,6 @@ type t [@@deriving compare];
 let equal: t => t => bool;
 
 
-/** Equality for field names ignoring the struct or class which contains the field. */
-let equal_modulo_parent: t => t => bool;
-
-
 /** Set for fieldnames */
 module Set: Caml.Set.S with type elt = t;