1 files changed, 2 insertions, 2 deletions
diff --git a/apps/dsaparam.c b/apps/dsaparam.c
index 8d48313d2b..d61bb70a70 100644
--- a/apps/dsaparam.c
+++ b/apps/dsaparam.c
@@ -195,10 +195,10 @@ int dsaparam_main(int argc, char **argv)
     }
     private = genkey ? 1 : 0;
 
-    in = bio_open_default(infile, "r");
+    in = bio_open_default(infile, RB(informat));
     if (in == NULL)
         goto end;
-    out = bio_open_owner(outfile, "w", private);
+    out = bio_open_owner(outfile, WB(outformat), private);
     if (out == NULL)
         goto end;