diff --git a/src/liblimb/djbunix.h/sa_readmax.c b/src/liblimb/djbunix.h/sa_readmax.c
index 4c8e804..ce784c7 100644
--- a/src/liblimb/djbunix.h/sa_readmax.c
+++ b/src/liblimb/djbunix.h/sa_readmax.c
@@ -19,12 +19,9 @@ sa_readmax(stralloc *sa, int fd, size_t max)
         if (!stralloc_readyplus(sa, n)) break;
 
         ssize_t r = fd_read(fd, sa->s + sa->len, n) ;
-        switch (r)
-        {
-            case -1: break;
-            case 0:  return 1;
-            default: sa->len += r;
-        }
+        if (!r) return 1;
+        else if (r == -1) break;
+        sa->len += r;
     }
 
     sa->len = salen;