diff --git a/config/Config-kernel.in b/config/Config-kernel.in
index 310c6dfd073..bdb6b91cbb0 100644
--- a/config/Config-kernel.in
+++ b/config/Config-kernel.in
@@ -625,7 +625,7 @@ endif
 
 config KERNEL_DEVPTS_MULTIPLE_INSTANCES
 	bool "Support multiple instances of devpts"
-	default y
+	default y if !SMALL_FLASH
 	help
 	  Enable support for multiple instances of devpts filesystem.
 	  If you want to have isolated PTY namespaces (eg: in containers),
@@ -635,7 +635,7 @@ config KERNEL_DEVPTS_MULTIPLE_INSTANCES
 
 config KERNEL_POSIX_MQUEUE
 	bool "POSIX Message Queues"
-	default y
+	default y if !SMALL_FLASH
 	help
 	  POSIX variant of message queues is a part of IPC. In POSIX message
 	  queues every message has a priority which decides about succession