diff --git a/config.mak.uname b/config.mak.uname
index 786bb2f913..281c547e2f 100644
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -490,6 +490,7 @@ ifeq ($(uname_S),NONSTOP_KERNEL)
 	OLD_ICONV = UnfortunatelyYes
 	NO_REGEX = NeedsStartEnd
 	NO_PTHREADS = UnfortunatelyYes
+	FREAD_READS_DIRECTORIES = UnfortunatelyYes
 
 	# Not detected (nor checked for) by './configure'.
 	# We don't have SA_RESTART on NonStop, unfortunalety.