diff --git a/acinclude.m4 b/acinclude.m4
index 47aada309..9bfb09e84 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -222,7 +222,7 @@ AC_DEFUN([CURL_FUNC_GETNAMEINFO_ARGTYPES], [
     curl_cv_func_getnameinfo_args="unknown"
     for gni_arg1 in 'struct sockaddr *' 'const struct sockaddr *' 'void *'; do
       for gni_arg2 in 'socklen_t' 'size_t' 'int'; do
-        for gni_arg46 in 'size_t' 'int' 'socklen_t' 'unsigned int'; do
+        for gni_arg46 in 'size_t' 'int' 'socklen_t' 'unsigned int' 'DWORD'; do
           for gni_arg7 in 'int' 'unsigned int'; do
             AC_COMPILE_IFELSE([
               AC_LANG_PROGRAM([
diff --git a/ares/acinclude.m4 b/ares/acinclude.m4
index d66351ea2..df89d8b43 100644
--- a/ares/acinclude.m4
+++ b/ares/acinclude.m4
@@ -222,7 +222,7 @@ AC_DEFUN([CURL_FUNC_GETNAMEINFO_ARGTYPES], [
     curl_cv_func_getnameinfo_args="unknown"
     for gni_arg1 in 'struct sockaddr *' 'const struct sockaddr *' 'void *'; do
       for gni_arg2 in 'socklen_t' 'size_t' 'int'; do
-        for gni_arg46 in 'size_t' 'int' 'socklen_t' 'unsigned int'; do
+        for gni_arg46 in 'size_t' 'int' 'socklen_t' 'unsigned int' 'DWORD'; do
           for gni_arg7 in 'int' 'unsigned int'; do
             AC_COMPILE_IFELSE([
               AC_LANG_PROGRAM([