1 files changed, 3 insertions, 3 deletions

diff --git a/ssh-keygen.c b/ssh-keygen.c
index bf7ade952..2a7939bfc 100644
--- a/ssh-keygen.c
+++ b/ssh-keygen.c
@@ -2485,9 +2485,9 @@ main(int argc, char **argv)
                 case 'W':
                         generator_wanted = (u_int32_t)strtonum(optarg, 1,
                             UINT_MAX, &errstr);
-                        if (errstr)
-                                fatal("Desired generator has bad value: %s (%s)",
-                                        optarg, errstr);
+                        if (errstr != NULL)
+                                fatal("Desired generator invalid: %s (%s)",
+                                    optarg, errstr);
                         break;
 #endif /* WITH_OPENSSL */
                 case '?':