diff --git a/dlls/ntdll/debugtools.c b/dlls/ntdll/debugtools.c
index cb08285..fc9f342 100644
--- a/dlls/ntdll/debugtools.c
+++ b/dlls/ntdll/debugtools.c
@@ -29,6 +29,7 @@
 # include <unistd.h>
 #endif
 #include <ctype.h>
+#include <sys/time.h>
 
 #include "wine/debug.h"
 #include "wine/exception.h"
@@ -164,8 +165,17 @@ static int NTDLL_dbg_vlog( enum __wine_debug_class cls, struct __wine_debug_chan
     /* only print header if we are at the beginning of the line */
     if (info->out_pos == info->output || info->out_pos[-1] == '\n')
     {
+        static struct timeval tv = {0,0};
+        struct timeval now, delta;
+
+        if(tv.tv_sec == 0) gettimeofday(&tv, NULL);
+        gettimeofday(&now, NULL);
+        timersub(&now, &tv, &delta);
+
+        ret += wine_dbg_printf( "[%ld.%06ld]", delta.tv_sec, delta.tv_usec);
+
         if (TRACE_ON(tid))
-            ret = wine_dbg_printf( "%04x:", GetCurrentThreadId() );
+            ret += wine_dbg_printf( "%04x:", GetCurrentThreadId() );
         if (cls < sizeof(classes)/sizeof(classes[0]))
             ret += wine_dbg_printf( "%s:%s:%s ", classes[cls], channel->name, function );
     }