diff --git a/mlir/include/mlir/IR/Dialect.h b/mlir/include/mlir/IR/Dialect.h
index f3e5f6d88c531..fb24a6895dabd 100644
--- a/mlir/include/mlir/IR/Dialect.h
+++ b/mlir/include/mlir/IR/Dialect.h
@@ -368,7 +368,6 @@ class Dialect {
   DenseSet<std::pair<TypeID, TypeID>> unresolvedPromisedInterfaces;
 
   friend class DialectRegistry;
-  friend void registerDialect();
   friend class MLIRContext;
 };