diff --git a/grammar/php.y b/grammar/php.y
index 8255e96102..cb1ba4a3c2 100644
--- a/grammar/php.y
+++ b/grammar/php.y
@@ -1135,7 +1135,7 @@ class_name_reference:
 
 class_name_or_var:
       class_name
-    | fully_dereferencable
+    | fully_dereferenceable
 ;
 
 exit_expr:
@@ -1184,7 +1184,7 @@ array_short_syntax:
             $$ = new Expr\Array_($2, $attrs); }
 ;
 
-dereferencable_scalar:
+dereferenceable_scalar:
       T_ARRAY '(' array_pair_list ')'
           { $attrs = attributes(); $attrs['kind'] = Expr\Array_::KIND_LONG;
             $$ = new Expr\Array_($3, $attrs);
@@ -1201,7 +1201,7 @@ scalar:
       T_LNUMBER
           { $$ = $this->parseLNumber($1, attributes(), $this->phpVersion->allowsInvalidOctals()); }
     | T_DNUMBER                                             { $$ = Scalar\Float_::fromString($1, attributes()); }
-    | dereferencable_scalar
+    | dereferenceable_scalar
     | constant
     | class_constant
     | T_START_HEREDOC T_ENCAPSED_AND_WHITESPACE T_END_HEREDOC
@@ -1217,34 +1217,34 @@ optional_expr:
     | expr
 ;
 
-fully_dereferencable:
+fully_dereferenceable:
       variable
     | '(' expr ')'                                          { $$ = $2; }
-    | dereferencable_scalar
+    | dereferenceable_scalar
     | class_constant
     | new_dereferenceable
 ;
 
-array_object_dereferencable:
-      fully_dereferencable
+array_object_dereferenceable:
+      fully_dereferenceable
     | constant
 ;
 
 callable_expr:
       callable_variable
     | '(' expr ')'                                          { $$ = $2; }
-    | dereferencable_scalar
+    | dereferenceable_scalar
     | new_dereferenceable
 ;
 
 callable_variable:
       simple_variable
-    | array_object_dereferencable '[' optional_expr ']'     { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | array_object_dereferencable '{' expr '}'              { $$ = Expr\ArrayDimFetch[$1, $3]; }
+    | array_object_dereferenceable '[' optional_expr ']'     { $$ = Expr\ArrayDimFetch[$1, $3]; }
+    | array_object_dereferenceable '{' expr '}'              { $$ = Expr\ArrayDimFetch[$1, $3]; }
     | function_call
-    | array_object_dereferencable T_OBJECT_OPERATOR property_name argument_list
+    | array_object_dereferenceable T_OBJECT_OPERATOR property_name argument_list
           { $$ = Expr\MethodCall[$1, $3, $4]; }
-    | array_object_dereferencable T_NULLSAFE_OBJECT_OPERATOR property_name argument_list
+    | array_object_dereferenceable T_NULLSAFE_OBJECT_OPERATOR property_name argument_list
           { $$ = Expr\NullsafeMethodCall[$1, $3, $4]; }
 ;
 
@@ -1256,9 +1256,9 @@ optional_plain_variable:
 variable:
       callable_variable
     | static_member
-    | array_object_dereferencable T_OBJECT_OPERATOR property_name
+    | array_object_dereferenceable T_OBJECT_OPERATOR property_name
           { $$ = Expr\PropertyFetch[$1, $3]; }
-    | array_object_dereferencable T_NULLSAFE_OBJECT_OPERATOR property_name
+    | array_object_dereferenceable T_NULLSAFE_OBJECT_OPERATOR property_name
           { $$ = Expr\NullsafePropertyFetch[$1, $3]; }
 ;