diff --git a/utils/path.c b/utils/path.c
index 10eecd84..01527de4 100644
--- a/utils/path.c
+++ b/utils/path.c
@@ -358,10 +358,10 @@ noexpand:
 
 char *
 nextName(ppath, file, dest, size)
-    char **ppath;		/* Pointer to a pointer to the next
+    const char **ppath;		/* Pointer to a pointer to the next
 				 * entry in the path.
 				 */
-    char *file;			/* Pointer to a file name. */
+    const char *file;		/* Pointer to a file name. */
     char *dest;			/* Place to build result name. */
     int size;			/* Size of result area. */
 
diff --git a/utils/utils.h b/utils/utils.h
index 7d07e293..87f1b063 100644
--- a/utils/utils.h
+++ b/utils/utils.h
@@ -47,7 +47,7 @@ extern int LookupFull(const char *, const char * const *);
 extern int LookupStruct(const char *str, const LookupTable *table_start, int size);
 extern int LookupStructFull(const char *str, const char * const *table, int size);
 extern int PaExpand(const char **, char **, int);
-extern char *nextName();
+extern char *nextName(const char **ppath, const char *file, char *dest, int size);
 extern FILE *PaOpen(char *, char *, char *, char *, char *, char **);
 extern FILE *PaLockOpen(char *, char *, char *, char *, char *, char **, bool *, int *);
 extern char *StrDup(char **, const char *);