diff --git a/reactos/drivers/wdm/audio/drm/drmk/drmk.def b/reactos/drivers/wdm/audio/drm/drmk/drmk.def
deleted file mode 100644
index b5208628163..00000000000
--- a/reactos/drivers/wdm/audio/drm/drmk/drmk.def
+++ /dev/null
@@ -1,12 +0,0 @@
-;
-; Exports definition file for drmk.sys
-;
-
-EXPORTS
-DrmAddContentHandlers@12
-DrmCreateContentMixed@12
-DrmDestroyContent@4
-DrmForwardContentToDeviceObject@12
-DrmForwardContentToFileObject@8
-DrmForwardContentToInterface@12
-DrmGetContentRights@8
\ No newline at end of file
diff --git a/reactos/drivers/wdm/audio/drm/drmk/drmk.rbuild b/reactos/drivers/wdm/audio/drm/drmk/drmk.rbuild
index 5b425b517ca..beef05a26fb 100644
--- a/reactos/drivers/wdm/audio/drm/drmk/drmk.rbuild
+++ b/reactos/drivers/wdm/audio/drm/drmk/drmk.rbuild
@@ -4,9 +4,10 @@
 	<include base="drmk">.</include>
 	<include base="drmk">..</include>
 	<include base="drmk">../include</include>
-	<importlibrary definition="drmk.def" />
+	<importlibrary definition="drmk.spec.def" />
 	<library>ntoskrnl</library>
 	<define name="BUILDING_DRMK" />
-	<file>drmk.rc</file>
 	<file>stubs.cpp</file>
+	<file>drmk.rc</file>
+	<file>drmk.spec</file>
 </module>
diff --git a/reactos/drivers/wdm/audio/drm/drmk/drmk.spec b/reactos/drivers/wdm/audio/drm/drmk/drmk.spec
new file mode 100644
index 00000000000..9f6947e5314
--- /dev/null
+++ b/reactos/drivers/wdm/audio/drm/drmk/drmk.spec
@@ -0,0 +1,7 @@
+@ stdcall DrmAddContentHandlers(long ptr long)
+@ stdcall DrmCreateContentMixed(ptr long ptr)
+@ stdcall DrmDestroyContent(long)
+@ stdcall DrmForwardContentToDeviceObject(long ptr ptr)
+@ stdcall DrmForwardContentToFileObject(long ptr)
+@ stdcall DrmForwardContentToInterface(long ptr long)
+@ stdcall DrmGetContentRights(long ptr)