diff --git a/dlls/qcap/qcap_main.c b/dlls/qcap/qcap_main.c
index 3a8c89fe077..cd4a6ebc0ab 100644
--- a/dlls/qcap/qcap_main.c
+++ b/dlls/qcap/qcap_main.c
@@ -27,8 +27,6 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
 
-HINSTANCE qcap_instance;
-
 struct class_factory
 {
     IClassFactory IClassFactory_iface;
@@ -109,16 +107,6 @@ static struct class_factory file_writer_cf = {{&class_factory_vtbl}, file_writer
 static struct class_factory smart_tee_cf = {{&class_factory_vtbl}, smart_tee_create};
 static struct class_factory vfw_capture_cf = {{&class_factory_vtbl}, vfw_capture_create};
 
-BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, void *reserved)
-{
-    if (reason == DLL_PROCESS_ATTACH)
-    {
-        qcap_instance = instance;
-        DisableThreadLibraryCalls(instance);
-    }
-    return TRUE;
-}
-
 HRESULT WINAPI DllGetClassObject(REFCLSID clsid, REFIID iid, void **out)
 {
     struct class_factory *factory;
diff --git a/dlls/qcap/qcap_private.h b/dlls/qcap/qcap_private.h
index e22815ff5cf..140e56539b5 100644
--- a/dlls/qcap/qcap_private.h
+++ b/dlls/qcap/qcap_private.h
@@ -30,8 +30,6 @@
 #include "wine/debug.h"
 #include "wine/strmbase.h"
 
-extern HINSTANCE qcap_instance DECLSPEC_HIDDEN;
-
 HRESULT audio_record_create(IUnknown *outer, IUnknown **out) DECLSPEC_HIDDEN;
 HRESULT avi_compressor_create(IUnknown *outer, IUnknown **out) DECLSPEC_HIDDEN;
 HRESULT avi_mux_create(IUnknown *outer, IUnknown **out) DECLSPEC_HIDDEN;
diff --git a/dlls/qcap/vfwcapture.c b/dlls/qcap/vfwcapture.c
index d842117e9a5..a51b39c0a11 100644
--- a/dlls/qcap/vfwcapture.c
+++ b/dlls/qcap/vfwcapture.c
@@ -23,9 +23,7 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
 
-static unixlib_handle_t v4l_handle;
-
-#define V4L_CALL( func, params ) __wine_unix_call( v4l_handle, unix_ ## func, params )
+#define V4L_CALL( func, params ) WINE_UNIX_CALL( unix_ ## func, params )
 
 struct vfw_capture
 {
@@ -876,8 +874,7 @@ static const IAMVideoControlVtbl IAMVideoControl_VTable =
 
 static BOOL WINAPI load_capture_funcs(INIT_ONCE *once, void *param, void **context)
 {
-    NtQueryVirtualMemory( GetCurrentProcess(), qcap_instance, MemoryWineUnixFuncs,
-                          &v4l_handle, sizeof(v4l_handle), NULL );
+    __wine_init_unix_call();
     return TRUE;
 }
 
@@ -887,7 +884,7 @@ HRESULT vfw_capture_create(IUnknown *outer, IUnknown **out)
 {
     struct vfw_capture *object;
 
-    if (!InitOnceExecuteOnce(&init_once, load_capture_funcs, NULL, NULL) || !v4l_handle)
+    if (!InitOnceExecuteOnce(&init_once, load_capture_funcs, NULL, NULL) || !__wine_unixlib_handle)
         return E_FAIL;
 
     if (!(object = calloc(1, sizeof(*object))))