diff --git a/acconfig.h b/acconfig.h
index 05b11ac45f0f33..7b34041a26e303 100644
--- a/acconfig.h
+++ b/acconfig.h
@@ -22,12 +22,6 @@
 /* Define to `long' if <time.h> doesn't define.  */
 #undef clock_t
 
-/* Used for BeOS configuration */
-#undef DL_EXPORT_HEADER
-#ifdef DL_EXPORT_HEADER
-#include DL_EXPORT_HEADER
-#endif
-
 /* Define if getpgrp() must be called as getpgrp(0). */
 #undef GETPGRP_HAVE_ARG
 
diff --git a/config.h.in b/config.h.in
index 81831f9013621e..8f783f83499b24 100644
--- a/config.h.in
+++ b/config.h.in
@@ -90,12 +90,6 @@
 /* Define to `long' if <time.h> doesn't define.  */
 #undef clock_t
 
-/* Used for BeOS configuration */
-#undef DL_EXPORT_HEADER
-#ifdef DL_EXPORT_HEADER
-#include DL_EXPORT_HEADER
-#endif
-
 /* Define if getpgrp() must be called as getpgrp(0). */
 #undef GETPGRP_HAVE_ARG