Minimize duplicate localization processing

2 files changed, 2 insertions, 2 deletions

diff --git a/src/WixToolset.Core/CommandLine/BuildCommand.cs b/src/WixToolset.Core/CommandLine/BuildCommand.cs
index 5097bd9b..7b605da1 100644
--- a/src/WixToolset.Core/CommandLine/BuildCommand.cs
+++ b/src/WixToolset.Core/CommandLine/BuildCommand.cs
@@ -87,7 +87,7 @@ namespace WixToolset.Core.CommandLine
                 return 1;
             }
 
-            var wxls = this.LoadLocalizationFiles();
+            var wxls = this.LoadLocalizationFiles().ToList();
 
             if (this.Messaging.EncounteredError)
             {
diff --git a/src/WixToolset.Core/Resolver.cs b/src/WixToolset.Core/Resolver.cs
index b672e998..503d4bb7 100644
--- a/src/WixToolset.Core/Resolver.cs
+++ b/src/WixToolset.Core/Resolver.cs
@@ -241,7 +241,7 @@ namespace WixToolset.Core
             {
                 var library = data.GetLibrary(creator);
 
-                if (library?.Localizations != null)
+                if (library?.Localizations != null && library.Localizations.Any())
                 {
                     var extensionFilter = (!filter.Any() && data.DefaultCulture != null) ? new[] { data.DefaultCulture } : filter;