diff --git a/compiler/rustc_middle/src/ty/normalize_erasing_regions.rs b/compiler/rustc_middle/src/ty/normalize_erasing_regions.rs
index 7c8bc0f252fa..11399506b96e 100644
--- a/compiler/rustc_middle/src/ty/normalize_erasing_regions.rs
+++ b/compiler/rustc_middle/src/ty/normalize_erasing_regions.rs
@@ -113,7 +113,7 @@ impl TypeFolder<'tcx> for NormalizeAfterErasingRegionsFolder<'tcx> {
 
     #[inline]
     fn fold_mir_const(&mut self, c: mir::ConstantKind<'tcx>) -> mir::ConstantKind<'tcx> {
-        // FIXME: This *probalby* needs canonicalization too!
+        // FIXME: This *probably* needs canonicalization too!
         let arg = self.param_env.and(c);
         self.tcx.normalize_mir_const_after_erasing_regions(arg)
     }