diff --git a/c/tex_parser/tex_table.c b/c/tex_parser/tex_table.c
index 2116de4..6c36796 100644
--- a/c/tex_parser/tex_table.c
+++ b/c/tex_parser/tex_table.c
@@ -213,6 +213,7 @@ int parse_table(const char *table_source, size_t len, struct table_s *table, str
 
 			} else {
 				where_stack[tex_level--] = IN_UNDEF;
+				i--;
 			}
 		break;
 
@@ -243,9 +244,7 @@ int parse_table(const char *table_source, size_t len, struct table_s *table, str
 		break;
 
 		case IN_TAG_UNKNOWN:
-			if (isspace(c)) {
-
-			} else if (c == '{' || c == '[') { // tag params
+			if (c == '{' || c == '[') { // tag params
 				where_stack[++tex_level] = IN_TAGPARM;
 
 			} else if (c == '\\') { // new tag
@@ -258,6 +257,9 @@ int parse_table(const char *table_source, size_t len, struct table_s *table, str
 			} else if (isspace(c)) {
 				where_stack[++tex_level] = IN_SPACE;
 
+			} else if (c == '}') {
+				where_stack[tex_level--] = IN_UNDEF;
+
 			} else {
 				error->code = (int)i;
 				error->message = "unexpected symbol (IN_TAG_UNKNOWN)";