diff --git a/src/librustc/lint/builtin.rs b/src/librustc/lint/builtin.rs
index 7410386c6f45b..4bba1d0c90a1c 100644
--- a/src/librustc/lint/builtin.rs
+++ b/src/librustc/lint/builtin.rs
@@ -242,7 +242,7 @@ declare_lint! {
 
 declare_lint! {
     pub TYVAR_BEHIND_RAW_POINTER,
-    Warn,
+    Forbid,
     "raw pointer to an inference variable"
 }