diff --git a/docs/source/Grammar.md b/docs/source/Grammar.md
index d91e74fcd..f8cf832c8 100644
--- a/docs/source/Grammar.md
+++ b/docs/source/Grammar.md
@@ -69,6 +69,6 @@ hex\_float\_constant = `[-+]?0[xX](([.][:xdigit:]+)|([:xdigit:]+[.][:xdigit:]*)|
 
 special\_float\_constant = `[-+]?(nan|inf|infinity)`
 
-float\_constant = dec\_integer\_constant | hex\_integer\_constant | special\_float\_constant
+float\_constant = dec\_float\_constant | hex\_float\_constant | special\_float\_constant
 
 boolean\_constant = `true` | `false`