diff --git a/clippy_lints/src/duration_subsec.rs b/clippy_lints/src/duration_subsec.rs
index de75276ada7..fced237b66f 100644
--- a/clippy_lints/src/duration_subsec.rs
+++ b/clippy_lints/src/duration_subsec.rs
@@ -20,9 +20,9 @@ use crate::utils::{match_type, snippet, span_lint_and_sugg, walk_ptrs_ty};
 /// let _micros = dur.subsec_nanos() / 1_000;
 /// let _millis = dur.subsec_nanos() / 1_000_000;
 /// ```
-declare_lint! {
+declare_clippy_lint! {
     pub DURATION_SUBSEC,
-    Warn,
+    complexity,
     "checks for `dur.subsec_nanos() / 1_000` or `dur.subsec_nanos() / 1_000_000`"
 }
 
diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs
index 8188dd87836..553a41c066c 100644
--- a/clippy_lints/src/lib.rs
+++ b/clippy_lints/src/lib.rs
@@ -789,6 +789,7 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry) {
         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
         double_comparison::DOUBLE_COMPARISONS,
         double_parens::DOUBLE_PARENS,
+        duration_subsec::DURATION_SUBSEC,
         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
         explicit_write::EXPLICIT_WRITE,