diff --git a/src/AST/Declaration.cs b/src/AST/Declaration.cs
index 88dd014e..d640f694 100644
--- a/src/AST/Declaration.cs
+++ b/src/AST/Declaration.cs
@@ -128,7 +128,6 @@ namespace CppSharp.AST
                 return getName(this);
 
             var namespaces = GatherNamespaces(getNamespace(this));
-            namespaces.Reverse();
 
             var names = namespaces.Select(getName).ToList();
             names.Add(getName(this));
@@ -137,14 +136,14 @@ namespace CppSharp.AST
             return string.Join(QualifiedNameSeparator, names);
         }
 
-        public static List<Declaration> GatherNamespaces(DeclarationContext @namespace)
+        private static IEnumerable<Declaration> GatherNamespaces(DeclarationContext @namespace)
         {
-            var namespaces = new List<Declaration>();
+            var namespaces = new Stack<Declaration>();
 
             var currentNamespace = @namespace;
             while (currentNamespace != null)
             {
-                namespaces.Add(currentNamespace);
+                namespaces.Push(currentNamespace);
                 currentNamespace = currentNamespace.Namespace;
             }
 
diff --git a/src/AST/Namespace.cs b/src/AST/Namespace.cs
index ee1cc838..20c90123 100644
--- a/src/AST/Namespace.cs
+++ b/src/AST/Namespace.cs
@@ -88,18 +88,17 @@ namespace CppSharp.AST
 
         public IEnumerable<DeclarationContext> GatherParentNamespaces()
         {
-            var children = new List<DeclarationContext>();
+            var children = new Stack<DeclarationContext>();
             var currentNamespace = this;
 
             while (currentNamespace != null)
             {
                 if (!(currentNamespace is TranslationUnit))
-                    children.Add(currentNamespace);
+                    children.Push(currentNamespace);
 
                 currentNamespace = currentNamespace.Namespace;
             }
 
-            children.Reverse();
             return children;
         }
 
diff --git a/src/Generator/Generators/CSharp/CSharpTypePrinter.cs b/src/Generator/Generators/CSharp/CSharpTypePrinter.cs
index 4682f2e8..0a47e97f 100644
--- a/src/Generator/Generators/CSharp/CSharpTypePrinter.cs
+++ b/src/Generator/Generators/CSharp/CSharpTypePrinter.cs
@@ -668,7 +668,7 @@ namespace CppSharp.Generators.CSharp
 
         public string GetNestedQualifiedName(Declaration decl)
         {
-            var names = new List<string>();
+            var names = new Stack<string>();
 
             Declaration ctx;
             var specialization = decl as ClassTemplateSpecialization;
@@ -678,36 +678,36 @@ namespace CppSharp.Generators.CSharp
                 if (specialization.OriginalNamespace is Class &&
                     !(specialization.OriginalNamespace is ClassTemplateSpecialization))
                 {
-                    names.Add(string.Format("{0}_{1}", decl.OriginalNamespace.Name, decl.Name));
+                    names.Push(string.Format("{0}_{1}", decl.OriginalNamespace.Name, decl.Name));
                     ctx = ctx.Namespace ?? ctx;
                 }
                 else
                 {
-                    names.Add(decl.Name);
+                    names.Push(decl.Name);
                 }
             }
             else
             {
-                names.Add(decl.Name);
+                names.Push(decl.Name);
                 ctx = decl.Namespace;
             }
             if (decl is Variable && !(decl.Namespace is Class))
-                names.Add(decl.TranslationUnit.FileNameWithoutExtension);
+                names.Push(decl.TranslationUnit.FileNameWithoutExtension);
             while (!(ctx is TranslationUnit))
             {
                 if (!string.IsNullOrWhiteSpace(ctx.Name))
-                    names.Add(ctx.Name);
+                    names.Push(ctx.Name);
 
                 ctx = ctx.Namespace;
             }
             if (!ctx.TranslationUnit.IsSystemHeader && ctx.TranslationUnit.IsValid &&
                 !string.IsNullOrWhiteSpace(ctx.TranslationUnit.Module.OutputNamespace))
-                names.Add(ctx.TranslationUnit.Module.OutputNamespace);
+                names.Push(ctx.TranslationUnit.Module.OutputNamespace);
 
             names.Reverse();
-            var isInCurrentOutputNamespace = names[0] == Generator.CurrentOutputNamespace;
+            var isInCurrentOutputNamespace = names.Peek() == Generator.CurrentOutputNamespace;
             if (isInCurrentOutputNamespace || !FullyQualify)
-                names.RemoveAt(0);
+                names.Pop();
 
             return (isInCurrentOutputNamespace || !FullyQualify ?
                 string.Empty : "global::") + string.Join(".", names);