diff --git a/src/feature.h b/src/feature.h
index 2d49b5c..c23ade4 100644
--- a/src/feature.h
+++ b/src/feature.h
@@ -1133,7 +1133,7 @@
 /*
  * +ARP			Amiga only. Use arp.library, DOS 2.0 is not required.
  */
-#ifndef NO_ARP
+#if !defined(NO_ARP) && !defined(__amigaos4__)
 # define FEAT_ARP
 #endif