1 files changed, 3 insertions, 0 deletions

diff --git a/xs_fcgi.h b/xs_fcgi.h
index 870e3e8..0b53dac 100644
--- a/xs_fcgi.h
+++ b/xs_fcgi.h
@@ -173,6 +173,9 @@ xs_dict *xs_fcgi_request(FILE *f, xs_str **payload, int *p_size, int *fcgi_id)
                     xs *v = xs_str_new_sz((char *)&buf[offset], vsz);
                     offset += vsz;
 
+                    if (!xs_is_string(k) || !xs_is_string(v))
+                        continue;
+
                     cgi_vars = xs_dict_append(cgi_vars, k, v);
 
                     if (strcmp(k, "REQUEST_METHOD") == 0)