diff --git a/lib/pam/pam.c b/lib/pam/pam.c
index 4b8567c504ff4..84cf13ee7bc24 100644
--- a/lib/pam/pam.c
+++ b/lib/pam/pam.c
@@ -111,6 +111,7 @@ int converse(int n, const struct pam_message **msg, struct pam_response **resp,
         }
     }
     memset(aresp, 0, n * sizeof *aresp);
+    free(aresp);
     *resp = NULL;
     return PAM_CONV_ERR;
 }