diff --git a/src/attrs.c b/src/attrs.c
index 0fc4382..4231935 100644
--- a/src/attrs.c
+++ b/src/attrs.c
@@ -798,7 +798,7 @@ void TY_(DefinePriorityAttribute)(TidyDocImpl* doc, ctmbstr name)
     if ( priorities->count >= priorities->capacity )
     {
         priorities->capacity = priorities->capacity * 2;
-        priorities->list = realloc( priorities->list, sizeof(tmbstr) * priorities->capacity + 1 );
+        priorities->list = TidyRealloc(doc->allocator, priorities->list, sizeof(tmbstr) * priorities->capacity + 1 );
     }
 
     priorities->list[priorities->count] = TY_(tmbstrdup)( doc->allocator, name);
diff --git a/src/message.c b/src/message.c
index ba3da96..ee2e6c6 100644
--- a/src/message.c
+++ b/src/message.c
@@ -1350,7 +1350,7 @@ void TY_(DefineMutedMessage)(TidyDocImpl* doc, const TidyOptionImpl* opt, ctmbst
     if ( list->count >= list->capacity )
     {
         list->capacity = list->capacity * 2;
-        list->list = realloc( list->list, sizeof(tidyStrings) * list->capacity + 1 );
+        list->list = TidyRealloc(doc->allocator, list->list, sizeof(tidyStrings) * list->capacity + 1 );
     }
 
     list->list[list->count] = message;