diff --git a/include/tree_sitter/parser.h b/include/tree_sitter/parser.h
index 19965c07..3d644da6 100644
--- a/include/tree_sitter/parser.h
+++ b/include/tree_sitter/parser.h
@@ -82,11 +82,6 @@ typedef union {
   unsigned int count;
 } TSParseActionEntry;
 
-typedef union {
-  TSSymbol symbol;
-  unsigned short count;
-} TSInProgressSymbolEntry;
-
 struct TSLanguage {
   size_t symbol_count;
   const char **symbol_names;