diff --git a/configure/os/CONFIG.Common.win32-x86-mingw b/configure/os/CONFIG.Common.win32-x86-mingw
index cb3f53978..7c03781b0 100644
--- a/configure/os/CONFIG.Common.win32-x86-mingw
+++ b/configure/os/CONFIG.Common.win32-x86-mingw
@@ -30,7 +30,7 @@ ARCH_DEP_LDFLAGS += -m32
 # Compiler does not define  __unix __unix__ unix
 
 # Override for -DUNIX from CONFIG.Common.UnixCommon
-OP_SYS_CPPFLAGS = -D_MINGW -Wno-format
+OP_SYS_CPPFLAGS = -D_MINGW -D__USE_MINGW_ANSI_STDIO
 
 EXE = .exe
 RES = .coff