diff --git a/runtime/macros/maze/mazeclean.c b/runtime/macros/maze/mazeclean.c
index 04dcebd..f0f0bb6 100644
--- a/runtime/macros/maze/mazeclean.c
+++ b/runtime/macros/maze/mazeclean.c
@@ -8,7 +8,7 @@
 
 char *M, A, Z, E = 40, line[80], T[3];
 int
-main (C)
+main (int C)
 {
   for (M = line + E, *line = A = scanf ("%d", &C); --E; line[E] = M[E] = E)
     printf ("._");
diff --git a/src/version.c b/src/version.c
index 9ce9c8f..e97346d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    588,
+/**/
     587,
 /**/
     586,