diff --git a/compat/vcbuild/include/alloca.h b/compat/win32/alloca.h
similarity index 100%
rename from compat/vcbuild/include/alloca.h
rename to compat/win32/alloca.h
diff --git a/config.mak.uname b/config.mak.uname
index 71602ee9a1..9967de66a2 100644
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -480,6 +480,7 @@ ifeq ($(uname_S),NONSTOP_KERNEL)
 endif
 ifneq (,$(findstring MINGW,$(uname_S)))
 	pathsep = ;
+	HAVE_ALLOCA_H = YesPlease
 	NO_PREAD = YesPlease
 	NEEDS_CRYPTO_WITH_SSL = YesPlease
 	NO_LIBGEN_H = YesPlease