diff --git a/lib/glob2regex/src/glob_ast.cpp b/lib/glob2regex/src/glob_ast.cpp
index 55d7f02..5b4ce4e 100644
--- a/lib/glob2regex/src/glob_ast.cpp
+++ b/lib/glob2regex/src/glob_ast.cpp
@@ -44,12 +44,12 @@ namespace qi = boost::spirit::qi;
 namespace g2r {
 	namespace {
 		template <typename Iterator>
-		struct GlobGrammar : qi::grammar<Iterator, AstType()> {
+		struct GlobGrammar : qi::grammar<Iterator, GlobExpression()> {
 			GlobGrammar ( void );
 			~GlobGrammar ( void ) = default;
 
-			qi::rule<Iterator, AstType()> start;
-			qi::rule<Iterator, AstType()> alternation_list;
+			qi::rule<Iterator, GlobExpression()> start;
+			qi::rule<Iterator, GlobExpression()> alternation_list;
 			qi::rule<Iterator, GlobAlternation()> alternation;
 			qi::rule<Iterator, GlobGroup()> group;
 			qi::rule<Iterator, std::string()> literal;
@@ -92,11 +92,11 @@ namespace g2r {
 		}
 	} //unnamed namespace
 
-	AstType make_ast (const std::string& parGlob) {
+	GlobExpression make_ast (const std::string& parGlob) {
 		GlobGrammar<std::string::const_iterator> gramm;
 
 		auto glob_beg = parGlob.cbegin();
-		AstType glob_ast;
+		GlobExpression glob_ast;
 		const bool parse_ret = boost::spirit::qi::parse(
 			glob_beg,
 			parGlob.end(),
diff --git a/lib/glob2regex/src/glob_ast.hpp b/lib/glob2regex/src/glob_ast.hpp
index 7e49f8c..b6d766d 100644
--- a/lib/glob2regex/src/glob_ast.hpp
+++ b/lib/glob2regex/src/glob_ast.hpp
@@ -23,7 +23,7 @@
 #include <string>
 
 namespace g2r {
-	AstType make_ast ( const std::string& parGlob );
+	GlobExpression make_ast ( const std::string& parGlob );
 } //namespace g2r
 
 #endif
diff --git a/lib/glob2regex/src/glob_node_structs.hpp b/lib/glob2regex/src/glob_node_structs.hpp
index f9f58a4..7dd9421 100644
--- a/lib/glob2regex/src/glob_node_structs.hpp
+++ b/lib/glob2regex/src/glob_node_structs.hpp
@@ -82,16 +82,16 @@ namespace g2r {
 		GlobJolly
 	>;
 
-	struct GlobAlternation {
-		std::vector<std::vector<GlobNode>> alternatives;
-	};
+	using GlobExpression = std::vector<GlobNode>;
 
-	using AstType = std::vector<GlobNode>;
+	struct GlobAlternation {
+		std::vector<GlobExpression> alternatives;
+	};
 } //namespace g2r
 
 BOOST_FUSION_ADAPT_STRUCT(
 	g2r::GlobAlternation,
-	(std::vector<std::vector<g2r::GlobNode>>, alternatives)
+	(std::vector<g2r::GlobExpression>, alternatives)
 );
 
 static_assert(g2r::GlobJolly(1, 2, false) < g2r::GlobJolly(0, 0, true), "Wrong less than");
diff --git a/lib/glob2regex/src/render_ast.cpp b/lib/glob2regex/src/render_ast.cpp
index a80df3c..d04b423 100644
--- a/lib/glob2regex/src/render_ast.cpp
+++ b/lib/glob2regex/src/render_ast.cpp
@@ -25,10 +25,10 @@ namespace ka = boost::spirit::karma;
 namespace g2r {
 	namespace {
 		template <typename Iterator>
-		struct RegexGen : ka::grammar<Iterator, AstType()> {
+		struct RegexGen : ka::grammar<Iterator, GlobExpression()> {
 			RegexGen ( void );
 
-			boost::spirit::karma::rule<Iterator, AstType()> start;
+			boost::spirit::karma::rule<Iterator, GlobExpression()> start;
 			boost::spirit::karma::rule<Iterator, GlobAlternation()> alternation;
 			boost::spirit::karma::rule<Iterator, GlobGroup()> group;
 			boost::spirit::karma::rule<Iterator, std::string()> literal;
@@ -63,7 +63,7 @@ namespace g2r {
 		}
 	} //unnamed namespace
 
-	std::string render_ast (const AstType& parAst) {
+	std::string render_ast (const GlobExpression& parAst) {
 		RegexGen<boost::spirit::ostream_iterator> gramm;
 		std::ostringstream oss;
 		oss << ka::format(gramm, parAst);
diff --git a/lib/glob2regex/src/render_ast.hpp b/lib/glob2regex/src/render_ast.hpp
index 1cf1def..118694b 100644
--- a/lib/glob2regex/src/render_ast.hpp
+++ b/lib/glob2regex/src/render_ast.hpp
@@ -23,7 +23,7 @@
 #include <string>
 
 namespace g2r {
-	std::string render_ast ( const AstType& parAst );
+	std::string render_ast ( const GlobExpression& parAst );
 } //namespace g2r
 
 #endif