diff --git a/src/import-export/hbci/hbci-interaction.c b/src/import-export/hbci/hbci-interaction.c
index e75a28aed8..c2fc6d2ff2 100644
--- a/src/import-export/hbci/hbci-interaction.c
+++ b/src/import-export/hbci/hbci-interaction.c
@@ -351,7 +351,7 @@ static int inputBoxCB(AB_BANKING *ab,
 	break;
     }
     else {
-      g_assert (maxLen > strlen(resultbuffer));
+      g_assert (maxLen > strlen(passwd));
       strcpy(resultbuffer, passwd);
       g_free (memset (passwd, 0, strlen (passwd)));
       g_free(title);