diff --git a/src/cryptsetup/cryptsetup.c b/src/cryptsetup/cryptsetup.c
index c8e90cf60d..56d3e34895 100644
--- a/src/cryptsetup/cryptsetup.c
+++ b/src/cryptsetup/cryptsetup.c
@@ -697,7 +697,7 @@ static int run(int argc, char *argv[]) {
                                                          flags);
                         if (r >= 0)
                                 break;
-                        if (r == -EAGAIN) {
+                        if (r == -EAGAIN) { /* Passphrase not correct? Let's try again! */
                                 key_file = NULL;
                                 continue;
                         }