diff --git a/cmdline/mingw.c b/cmdline/mingw.c
index f5b80b2b..a44e33a0 100644
--- a/cmdline/mingw.c
+++ b/cmdline/mingw.c
@@ -1755,6 +1755,8 @@ int randomize(void* ptr, size_t size)
  * In Windows printf() is not atomic, and multiple threads
  * will have output interleaved.
  *
+ * Note that even defining __USE_MINGW_ANSI_STDIO the problem persists.
+ *
  * See for example:
  *
  * Weird output when I use pthread and printf.
diff --git a/cmdline/portable.h b/cmdline/portable.h
index b88ec705..729e9458 100644
--- a/cmdline/portable.h
+++ b/cmdline/portable.h
@@ -26,6 +26,7 @@
 /* Config */
 
 #ifdef __MINGW32__ /* Specific for MINGW */
+#define __USE_MINGW_ANSI_STDIO 1 /* Enable the GNU printf functions instead of using the MSVCRT ones */
 #define __MSVCRT_VERSION__ 0x0601 /* Define the MSVCRT version targetting Windows XP */
 #define _WIN32_WINNT 0x501 /* Include Windows XP CreateHardLinkW */
 #include <windows.h>