diff --git a/reactos/lib/3rdparty/libwine/debug.c b/reactos/lib/3rdparty/libwine/debug.c
index 64a9bc94226..4dff5eae48c 100644
--- a/reactos/lib/3rdparty/libwine/debug.c
+++ b/reactos/lib/3rdparty/libwine/debug.c
@@ -42,16 +42,6 @@ DbgPrint(
     IN ...
 );
 
-ULONG
-__cdecl
-vDbgPrintExWithPrefix(
-  IN LPCSTR Prefix,
-  IN ULONG ComponentId,
-  IN ULONG Level,
-  IN LPCSTR Format,
-  IN va_list ap);
-
-
 static const char * const debug_classes[] = { "fixme", "err", "warn", "trace" };
 
 #define MAX_DEBUG_OPTIONS 256
@@ -394,7 +384,10 @@ static const char *default_dbgstr_wn( const WCHAR *str, int n )
 /* default implementation of wine_dbg_vprintf */
 static int default_dbg_vprintf( const char *format, va_list args )
 {
-    return vDbgPrintExWithPrefix(NULL, -1, 0, format, args);
+    char buffer[512];
+    vsnprintf( buffer, sizeof(buffer), format, args );
+    buffer[sizeof(buffer) - 1] = '\0';
+    return DbgPrint( "%s", buffer );
 }