diff --git a/windows/OpenLP.iss.default b/windows/OpenLP.iss.default
index 688fc34..fe5ac87 100644
--- a/windows/OpenLP.iss.default
+++ b/windows/OpenLP.iss.default
@@ -87,6 +87,7 @@ Filename: {app}\{#AppExeName}; Description: {cm:LaunchProgram,{#AppName}}; Flags
 
 [Registry]
 Root: HKCR; Subkey: .osz; ValueType: string; ValueName: ; ValueData: OpenLP; Flags: uninsdeletevalue
+Root: HKCR; Subkey: .oszl; ValueType: string; ValueName: ; ValueData: OpenLP; Flags: uninsdeletevalue
 Root: HKCR; Subkey: OpenLP; ValueType: string; ValueName: ; ValueData: OpenLP Service; Flags: uninsdeletekey
 Root: HKCR; Subkey: OpenLP\DefaultIcon; ValueType: string; ValueName: ; ValueData: {app}\OpenLP.exe,0
 Root: HKCR; Subkey: OpenLP\shell\open\command; ValueType: string; ValueName: ; ValueData: """{app}\OpenLP.exe"" ""%1"""
diff --git a/windows/appinfo.ini.default b/windows/appinfo.ini.default
index 8bb12c3..238e6ac 100644
--- a/windows/appinfo.ini.default
+++ b/windows/appinfo.ini.default
@@ -19,7 +19,7 @@ CommercialUse=true
 
 [Version]
 DisplayVersion=%(display_version)s-%(arch)s
-PackageVersion=%(package_version)s-%(arch)s
+PackageVersion=%(package_version)s
 
 [Control]
 Icons=1
@@ -27,6 +27,8 @@ Start=OpenLPPortable.exe
 
 [Associations]
 FileType=osz
+FileType=oszl
 
 [FileTypeIcons]
 osz=app
+oszl=app