diff --git a/src/main.c b/src/main.c
index 7aa698505..60e7b596b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -4925,7 +4925,7 @@ operate(struct Configurable *config, int argc, argv_item_t argv[])
           int authbits = 0;
           int bitcheck = 0;
           while(bitcheck < 32) {
-            if(config->authtype & (1 << bitcheck)) {
+            if(config->authtype & (1 << bitcheck++)) {
               authbits++;
               if(authbits > 1) {
                 /* more than one, we're done! */