diff --git a/smallapp/unbound-anchor.c b/smallapp/unbound-anchor.c
index 16009d845..b3bba6c24 100644
--- a/smallapp/unbound-anchor.c
+++ b/smallapp/unbound-anchor.c
@@ -1836,7 +1836,7 @@ write_unsigned_root(const char* root_anchor_file)
 #ifdef HAVE_FSYNC
 	fsync(fileno(out));
 #else
-	FlushFileBuffers((HANDLE)get_osfhandle(_fileno(out)));
+	FlushFileBuffers((HANDLE)_get_osfhandle(_fileno(out)));
 #endif
 	fclose(out);
 }
@@ -1868,7 +1868,7 @@ write_root_anchor(const char* root_anchor_file, BIO* ds)
 #ifdef HAVE_FSYNC
 	fsync(fileno(out));
 #else
-	FlushFileBuffers((HANDLE)get_osfhandle(_fileno(out)));
+	FlushFileBuffers((HANDLE)_get_osfhandle(_fileno(out)));
 #endif
 	fclose(out);
 }
diff --git a/validator/autotrust.c b/validator/autotrust.c
index a5924f0ed..f76aec2c1 100644
--- a/validator/autotrust.c
+++ b/validator/autotrust.c
@@ -1201,7 +1201,7 @@ void autr_write_file(struct module_env* env, struct trust_anchor* tp)
 	if(fsync(fileno(out)) != 0)
 		log_err("could not fsync(%s): %s", fname, strerror(errno));
 #else
-	FlushFileBuffers((HANDLE)get_osfhandle(_fileno(out)));
+	FlushFileBuffers((HANDLE)_get_osfhandle(_fileno(out)));
 #endif
 	if(fclose(out) != 0) {
 		fatal_exit("could not complete write: %s: %s",