diff --git a/src/lexer.c b/src/lexer.c
index 8877445..479fcc9 100644
--- a/src/lexer.c
+++ b/src/lexer.c
@@ -100,7 +100,7 @@ static void Show_Node( TidyDocImpl* doc, const char *msg, Node *node )
     int col  = ( doc->lexer ? doc->lexer->columns : 0 );
     SPRTF("R=%d C=%d: ", line, col );
     // DEBUG: Be able to set a TRAP on a SPECIFIC row,col
-    if ((line == 60) && (col == 1)) {
+    if ((line == 7) && (col == 1)) {
         check_me("Show_Node"); // just a debug trap
     }
     if (lexer && lexer->token && 
diff --git a/src/tags.c b/src/tags.c
index a4e20ce..273ec47 100644
--- a/src/tags.c
+++ b/src/tags.c
@@ -734,7 +734,9 @@ void TY_(FreeDeclaredTags)( TidyDocImpl* doc, UserTagType tagType )
  * Tidy defaults to HTML5 mode
  * If the <!DOCTYPE ...> is found to NOT be HTML5,
  * then adjust tags to HTML4 mode
- * At present only TidyTag_A, but could apply to others
+ *
+ * NOTE: For each change added to here, there must 
+ * be a RESET added in TY_(ResetTags) below!
 \*/
 void TY_(AdjustTags)( TidyDocImpl *doc )
 {
@@ -778,6 +780,37 @@ void TY_(AdjustTags)( TidyDocImpl *doc )
     }
 }
 
+/*\
+ * Issue #285
+ * Reset the table to default HTML5 mode.
+ * For every change made in the above AdjustTags,
+ * the equivalent reset must be added here.
+\*/
+void TY_(ResetTags)( TidyDocImpl *doc )
+{
+    Dict *np = (Dict *)TY_(LookupTagDef)( TidyTag_A );
+    TidyTagImpl* tags = &doc->tags;
+    if (np) 
+    {
+        np->parser = TY_(ParseBlock);
+        np->model  = (CM_INLINE|CM_BLOCK|CM_MIXED);
+    }
+    np = (Dict *)TY_(LookupTagDef)( TidyTag_CAPTION );
+    if (np)
+    {
+        np->parser = TY_(ParseBlock);
+    }
+
+    np = (Dict *)TY_(LookupTagDef)( TidyTag_OBJECT );
+    if (np)
+    {
+        np->model = (CM_OBJECT|CM_IMG|CM_INLINE|CM_PARAM); /* reset */
+    }
+#if ELEMENT_HASH_LOOKUP
+    tagsEmptyHash( doc, tags ); /* not sure this is really required, but to be sure */
+#endif
+}
+
 void TY_(FreeTags)( TidyDocImpl* doc )
 {
     TidyTagImpl* tags = &doc->tags;
diff --git a/src/tags.h b/src/tags.h
index dde330e..2412717 100644
--- a/src/tags.h
+++ b/src/tags.h
@@ -87,7 +87,7 @@ ctmbstr        TY_(GetNextDeclaredTag)( TidyDocImpl* doc, UserTagType tagType,
 void TY_(InitTags)( TidyDocImpl* doc );
 void TY_(FreeTags)( TidyDocImpl* doc );
 void TY_(AdjustTags)( TidyDocImpl *doc ); /* if NOT HTML5 DOCTYPE, fall back to HTML4 legacy mode */
-
+void TY_(ResetTags)( TidyDocImpl *doc ); /* set table to HTML5 mode */
 
 /* Parser methods for tags */
 
diff --git a/src/tidylib.c b/src/tidylib.c
index 15e9596..69ac014 100755
--- a/src/tidylib.c
+++ b/src/tidylib.c
@@ -1185,6 +1185,7 @@ int         TY_(DocParseStream)( TidyDocImpl* doc, StreamIn* in )
     assert( doc->docIn == NULL );
     doc->docIn = in;
 
+    TY_(ResetTags)(doc);    /* reset table to html5 mode */
     TY_(TakeConfigSnapshot)( doc );    /* Save config state */
     TY_(FreeAnchors)( doc );