diff --git a/source3/lib/smbconf/smbconf_private.h b/source3/lib/smbconf/smbconf_private.h
index cba9148c7c8..44229e26ec3 100644
--- a/source3/lib/smbconf/smbconf_private.h
+++ b/source3/lib/smbconf/smbconf_private.h
@@ -70,4 +70,7 @@ WERROR smbconf_add_string_to_array(TALLOC_CTX *mem_ctx,
 bool smbconf_find_in_array(const char *string, char **list,
 			   uint32_t num_entries, uint32_t *entry);
 
+bool smbconf_reverse_find_in_array(const char *string, char **list,
+				   uint32_t num_entries, uint32_t *entry);
+
 #endif
diff --git a/source3/lib/smbconf/smbconf_util.c b/source3/lib/smbconf/smbconf_util.c
index 99b08cdd708..ee79b6360fb 100644
--- a/source3/lib/smbconf/smbconf_util.c
+++ b/source3/lib/smbconf/smbconf_util.c
@@ -122,3 +122,24 @@ bool smbconf_find_in_array(const char *string, char **list,
 
 	return false;
 }
+
+bool smbconf_reverse_find_in_array(const char *string, char **list,
+				   uint32_t num_entries, uint32_t *entry)
+{
+	uint32_t i;
+
+	if ((string == NULL) || (list == NULL) || (num_entries == 0)) {
+		return false;
+	}
+
+	for (i = num_entries - 1; i >= 0; i++) {
+		if (strequal(string, list[i])) {
+			if (entry != NULL) {
+				*entry = i;
+			}
+			return true;
+		}
+	}
+
+	return false;
+}