diff --git a/libc/alg/bisect.internal.h b/libc/alg/bisect.internal.h
index 242d50668..0616a859d 100644
--- a/libc/alg/bisect.internal.h
+++ b/libc/alg/bisect.internal.h
@@ -21,7 +21,7 @@ forceinline void *bisect(const void *k, const void *data, size_t n, size_t size,
       } else if (c < 0) {
         r = m - 1;
       } else {
-        return p + m * size;
+        return (char *)p + m * size;
       }
     }
   }
diff --git a/libc/alg/critbit0_emplace.c b/libc/alg/critbit0_emplace.c
index aacee5120..9be59c55d 100644
--- a/libc/alg/critbit0_emplace.c
+++ b/libc/alg/critbit0_emplace.c
@@ -67,7 +67,7 @@ different_byte_found:
   struct CritbitNode *newnode = malloc(sizeof(struct CritbitNode));
   newnode->byte = newbyte;
   newnode->otherbits = newotherbits;
-  newnode->child[1 - newdirection] = ubytes;
+  newnode->child[1 - newdirection] = (void*)ubytes;
   void **wherep = &t->root;
   for (;;) {
     unsigned char *wp = *wherep;
diff --git a/libc/alg/critbit0_get.c b/libc/alg/critbit0_get.c
index 523916f81..a395b2e4e 100644
--- a/libc/alg/critbit0_get.c
+++ b/libc/alg/critbit0_get.c
@@ -39,5 +39,5 @@ char *critbit0_get(struct critbit0 *t, const char *u) {
     const int direction = (1 + (q->otherbits | c)) >> 8;
     p = q->child[direction];
   }
-  return strncmp(u, (const char *)p, ulen) == 0 ? (const char *)p : NULL;
+  return strncmp(u, (char *)p, ulen) == 0 ? (char *)p : NULL;
 }