diff --git a/src/Init/Notation.lean b/src/Init/Notation.lean
index 6c32ccb380..dbb1b55a5d 100644
--- a/src/Init/Notation.lean
+++ b/src/Init/Notation.lean
@@ -9,10 +9,15 @@ prelude
 import Init.Prelude
 
 -- DSL for specifying parser precedences
-syntax ident : prec
-syntax num : prec
-syntax:65 prec " + " prec:66 : prec
-syntax:65 prec " - " prec:66 : prec
+
+namespace Lean.Parser.Syntax
+
+syntax [numPrec] num : prec
+syntax:65 [addPrec] prec " + " prec:66 : prec
+syntax:65 [subPrec] prec " - " prec:66 : prec
+
+end Lean.Parser.Syntax
+
 macro "max"  : prec => `(1024)
 macro "lead" : prec => `(1023)
 macro "(" p:prec ")" : prec => p