1 files changed, 1 insertions, 1 deletions

diff --git a/src/wixext/MsmqWindowsInstallerBackendExtension.cs b/src/wixext/MsmqWindowsInstallerBackendExtension.cs
index 3f83db56..d317fb60 100644
--- a/src/wixext/MsmqWindowsInstallerBackendExtension.cs
+++ b/src/wixext/MsmqWindowsInstallerBackendExtension.cs
@@ -8,6 +8,6 @@ namespace WixToolset.Msmq
 
     public class MsmqWindowsInstallerBackendBinderExtension : BaseWindowsInstallerBackendBinderExtension
     {
-        public override IEnumerable<TableDefinition> TableDefinitions => MsmqTableDefinitions.All;
+        public override IReadOnlyCollection<TableDefinition> TableDefinitions => MsmqTableDefinitions.All;
     }
 }