diff --git a/Bootloaders/MassStorage/asf.xml b/Bootloaders/MassStorage/asf.xml
index 11633dc5a6..ba8e011de7 100644
--- a/Bootloaders/MassStorage/asf.xml
+++ b/Bootloaders/MassStorage/asf.xml
@@ -136,6 +136,7 @@
 
 		<build type="module-config" subtype="path" value="Config"/>
 		<build type="header-file" value="Config/LUFAConfig.h"/>
+		<build type="header-file" value="Config/AppConfig.h"/>
 
 		<build type="include-path" value="Lib"/>
 		<build type="header-file" value="Lib/VirtualFAT.h"/>