diff --git a/service/integration/integration_windows.go b/service/integration/integration_windows.go
index 786d6da63..80b1fd74c 100644
--- a/service/integration/integration_windows.go
+++ b/service/integration/integration_windows.go
@@ -18,7 +18,7 @@ type OSSpecific struct {
 // Initialize loads the dll and finds all the needed functions from it.
 func (i *OSIntegration) Initialize() error {
 	// Find path to the dll.
-	file, err := updates.GetFile("portmaster-core.dll")
+	file, err := updates.GetPlatformFile("dll/portmaster-core.dll")
 	if err != nil {
 		return err
 	}
diff --git a/service/updates/helper/updates.go b/service/updates/helper/updates.go
index efae917d0..59001c1c9 100644
--- a/service/updates/helper/updates.go
+++ b/service/updates/helper/updates.go
@@ -52,6 +52,7 @@ func MandatoryUpdates() (identifiers []string) {
 		identifiers = append(
 			identifiers,
 			PlatformIdentifier("core/portmaster-core.exe"),
+			PlatformIdentifier("dll/portmaster-core.dll"),
 			PlatformIdentifier("kext/portmaster-kext.sys"),
 			PlatformIdentifier("kext/portmaster-kext.pdb"),
 			PlatformIdentifier("start/portmaster-start.exe"),