diff --git a/tools/flang1/flang1exe/main.c b/tools/flang1/flang1exe/main.c
index 0f3ab1165bb..de93a9c0afa 100644
--- a/tools/flang1/flang1exe/main.c
+++ b/tools/flang1/flang1exe/main.c
@@ -1122,9 +1122,9 @@ init(int argc, char *argv[])
     if (!ipa_import_mode) {
       if (fpp_) {
         if (flg.es) {
-          if (cppfile == NULL)
+          if (outfile_name == NULL)
             gbl.cppfil = stdout;
-          else if ((gbl.cppfil = fopen(cppfile, "w")) == NULL)
+          else if ((gbl.cppfil = fopen(outfile_name, "w")) == NULL)
             errfatal(5);
         } else {
           if ((gbl.cppfil = tmpf("a")) == NULL)