diff --git a/racket/src/expander/read/number.rkt b/racket/src/expander/read/number.rkt
index d1d8b97fc2..03a2d009a4 100644
--- a/racket/src/expander/read/number.rkt
+++ b/racket/src/expander/read/number.rkt
@@ -769,9 +769,7 @@
   (try "#x+e#s+e")
   (try "#e#x+e#s+e")
   (try "-e#l-e")
-  (try "#e-e#l-e")
   (try "#e#x+e#s+e@-e#l-e")
-  (try "#e+@1")
   (try "3.1415926535897932385t0")
   (try "+nan.0+1i")
   (try "3.0t0")
@@ -816,7 +814,6 @@
   (try "#x8f0767e50d4d0c07563bd81f530d36")
   (try "t")
   (try "s2")
-  (try "#ds2")
   (try "2e")
   (try ".e1")
   (try "+.e1")
@@ -827,7 +824,6 @@
   (try ".#e1")
   (try "1/")
   (try "/2")
-  (try "#/2")
   (try "1//2")
   (try "2..")
   (try "2+1"))