1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/libcrypto/engine/eng_fat.c b/src/lib/libcrypto/engine/eng_fat.c
index 789b8d57e5..e01067566e 100644
--- a/src/lib/libcrypto/engine/eng_fat.c
+++ b/src/lib/libcrypto/engine/eng_fat.c
@@ -141,7 +141,7 @@ int ENGINE_set_default_string(ENGINE *e, const char *def_list)
                 {
                 ENGINEerr(ENGINE_F_ENGINE_SET_DEFAULT_STRING,
                                         ENGINE_R_INVALID_STRING);
-                ERR_add_error_data(2, "str=",def_list);
+                ERR_asprintf_error_data("str=%s",def_list);
                 return 0;
                 }
         return ENGINE_set_default(e, flags);