diff --git a/src/configure/mod.rs b/src/configure/mod.rs
index b15a1a3d1..8f2126182 100644
--- a/src/configure/mod.rs
+++ b/src/configure/mod.rs
@@ -1,5 +1,7 @@
 //! Email accounts autoconfiguration process module
 
+#![forbid(clippy::indexing_slicing)]
+
 mod auto_mozilla;
 mod auto_outlook;
 mod read_url;