diff --git a/reactos/drivers/multimedia/bdasup/bdasup.c b/reactos/drivers/multimedia/bdasup/bdasup.c
index 299e4389a62..0d657c68d74 100644
--- a/reactos/drivers/multimedia/bdasup/bdasup.c
+++ b/reactos/drivers/multimedia/bdasup/bdasup.c
@@ -149,6 +149,21 @@ GetFilterInstanceEntry(
     return InstanceEntry;
 }
 
+/*
+    @implemented
+*/
+NTSTATUS
+NTAPI
+DllInitialize(
+    PUNICODE_STRING  RegistryPath)
+{
+    KeInitializeSpinLock(&g_Settings.FilterFactoryInstanceListLock);
+    InitializeListHead(&g_Settings.FilterFactoryInstanceList);
+    g_Settings.Initialized = TRUE;
+
+    return STATUS_SUCCESS;
+}
+
 /*
     @implemented
 */
diff --git a/reactos/drivers/multimedia/bdasup/bdasup.spec b/reactos/drivers/multimedia/bdasup/bdasup.spec
index e858cfddbe3..cd1b2e45e39 100644
--- a/reactos/drivers/multimedia/bdasup/bdasup.spec
+++ b/reactos/drivers/multimedia/bdasup/bdasup.spec
@@ -1,3 +1,4 @@
+@ stdcall DllInitialize(ptr)
 @ stdcall BdaCheckChanges(ptr)
 @ stdcall BdaCommitChanges(ptr)
 @ stdcall BdaCreateFilterFactory(ptr ptr ptr)