diff --git a/package-data-list.lisp-expr b/package-data-list.lisp-expr                                                                                                 
index 07b38dc3a..6ac1cb944 100644                                                                                                                                      
--- a/package-data-list.lisp-expr                                                                                                                                      
+++ b/package-data-list.lisp-expr                                                                                                                                      
@@ -946,6 +946,7 @@ like *STACK-TOP-HINT* and unsupported stuff like *TRACED-FUN-LIST*."                                                                               
                "*PRINT-VECTOR-LENGTH*"                                                                                                                                
                "DECIMAL-WITH-GROUPED-DIGITS-WIDTH"                                                                                                                    
                ;;"OBJECT-SIZE"                                                                                                                                        
+               "*READ-INTERN*"                                                                                                                                        
                                                                                                                                                                       
                ;; stepping interface                                                                                                                                  
                "STEP-CONDITION" "STEP-FORM-CONDITION" "STEP-FINISHED-CONDITION"