diff --git a/Include/pyport.h b/Include/pyport.h
index 4bc6016..bf79012 100644
--- a/Include/pyport.h
+++ b/Include/pyport.h
@@ -387,7 +387,7 @@
  * rather than waiting for integer multiplication to trigger bogus
  * overflows.
  */
-#error "LONG_BIT definition appears wrong for platform (bad gcc config?)."
+#error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."
 #endif
 
 #ifdef __NeXT__