diff --git a/include/private/vkd3d_common.h b/include/private/vkd3d_common.h
index 6f878cce..8d6e7b37 100644
--- a/include/private/vkd3d_common.h
+++ b/include/private/vkd3d_common.h
@@ -304,13 +304,6 @@ static inline uint32_t vkd3d_atomic_increment_u32(uint32_t volatile *x)
     return vkd3d_atomic_add_fetch_u32(x, 1);
 }
 
-#ifndef _WIN32
-static inline LONG InterlockedDecrement(LONG volatile *x)
-{
-    return vkd3d_atomic_decrement_u32((uint32_t *)x);
-}
-#endif  /* _WIN32 */
-
 static inline void vkd3d_parse_version(const char *version, int *major, int *minor)
 {
     *major = atoi(version);
diff --git a/tests/vkd3d_api.c b/tests/vkd3d_api.c
index 29948783..62e30b47 100644
--- a/tests/vkd3d_api.c
+++ b/tests/vkd3d_api.c
@@ -658,7 +658,7 @@ static ULONG STDMETHODCALLTYPE parent_Release(IUnknown *iface)
 {
     struct parent *parent = parent_from_IUnknown(iface);
 
-    return InterlockedDecrement((LONG *)&parent->refcount);
+    return vkd3d_atomic_decrement_u32(&parent->refcount);
 }
 
 static const struct IUnknownVtbl parent_vtbl =