diff --git a/libc/tools/bionic_utils.py b/libc/tools/bionic_utils.py
index 0ca2178..f8d8897 100644
--- a/libc/tools/bionic_utils.py
+++ b/libc/tools/bionic_utils.py
@@ -122,9 +122,7 @@
 
         # Parse the architecture list.
         arch_list = line[pos_rparen+1:].strip()
-        if arch_list == "custom":
-            pass
-        elif arch_list == "all":
+        if arch_list == "all":
             for arch in all_arches:
                 t[arch] = True
         else: