diff --git a/modutils/modutils.c b/modutils/modutils.c
index dae623ee4..6f7cd9721 100644
--- a/modutils/modutils.c
+++ b/modutils/modutils.c
@@ -75,12 +75,6 @@ void FAST_FUNC replace(char *s, char what, char with)
 	}
 }
 
-char* FAST_FUNC replace_underscores(char *s)
-{
-	replace(s, '-', '_');
-	return s;
-}
-
 int FAST_FUNC string_to_llist(char *string, llist_t **llist, const char *delim)
 {
 	char *tok;
diff --git a/modutils/modutils.h b/modutils/modutils.h
index 76ce242ba..4a702e97c 100644
--- a/modutils/modutils.h
+++ b/modutils/modutils.h
@@ -48,7 +48,6 @@ module_entry *moddb_get_or_create(module_db *db, const char *s) FAST_FUNC;
 void moddb_free(module_db *db) FAST_FUNC;
 
 void replace(char *s, char what, char with) FAST_FUNC;
-char *replace_underscores(char *s) FAST_FUNC;
 int string_to_llist(char *string, llist_t **llist, const char *delim) FAST_FUNC;
 char *filename2modname(const char *filename, char *modname) FAST_FUNC;
 #if ENABLE_FEATURE_CMDLINE_MODULE_OPTIONS