Index: generic/nsfEnumerationType.c
===================================================================
diff -u -r625e5b42ce67fb5b427852f477e9dac8746e8025 -r5cf5c26d9080db33217c21466db469c3217cbda4
--- generic/nsfEnumerationType.c	(.../nsfEnumerationType.c)	(revision 625e5b42ce67fb5b427852f477e9dac8746e8025)
+++ generic/nsfEnumerationType.c	(.../nsfEnumerationType.c)	(revision 5cf5c26d9080db33217c21466db469c3217cbda4)
@@ -114,10 +114,9 @@
  *----------------------------------------------------------------------
  */
 int
-Nsf_EnumerationTypeRegister(Tcl_Interp *interp, Nsf_EnumeratorConverterEntry *typeRecords) {
+Nsf_EnumerationTypeRegister(Tcl_Interp *UNUSED(interp), Nsf_EnumeratorConverterEntry *typeRecords) {
   Nsf_EnumeratorConverterEntry *ePtr;
 
-  nonnull_assert(interp != NULL);
   nonnull_assert(typeRecords != NULL);
 
   for (ePtr = typeRecords; ePtr->converter; ePtr++) {