diff --git a/src/build.js b/src/build.js
index ef5d67e9881295fc084ba21bb9e16f4d7c87be10..f15d426f8c4210c54435aad8892e73e15a2dec8d 100644
--- a/src/build.js
+++ b/src/build.js
@@ -10,6 +10,12 @@ packager ({
 	out: path.join ('..','dist'),
 	cleanApp: 'MBQSServer',
 	electronApp: 'StartMBQS',
+	fileAssociations: [
+		{
+			ext: 'mbqs',
+			name: 'MBQS sheet'
+		}
+	],
 	ignore: [
 		/* Source code */
 		/^\/CleanRegex$/,