diff --git a/Python/getargs.c b/Python/getargs.c
index 9e9695f..78b2328 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -1629,6 +1629,7 @@
     case 'D': /* complex double */
     case 'c': /* char */
     case 'C': /* unicode char */
+    case 'p': /* boolean predicate */
         {
             (void) va_arg(*p_va, void *);
             break;