diff --git a/package/blktrace/Config.in b/package/blktrace/Config.in
index 38c0947e1c..684157c7eb 100644
--- a/package/blktrace/Config.in
+++ b/package/blktrace/Config.in
@@ -1,6 +1,7 @@
 config BR2_PACKAGE_BLKTRACE
 	bool "blktrace"
 	depends on BR2_PACKAGE_LIBAIO_ARCH_SUPPORTS
+	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL # clock_nanosleep()
 	select BR2_PACKAGE_LIBAIO
 	help
 	  blktrace is a block layer IO tracing mechanism which provides
@@ -8,3 +9,7 @@ config BR2_PACKAGE_BLKTRACE
 	  up to user space.
 
 	  http://git.kernel.dk/?p=blktrace.git;a=summary
+
+comment "blktrace needs a toolchain w/ NPTL"
+	depends on BR2_PACKAGE_LIBAIO_ARCH_SUPPORTS
+	depends on !BR2_TOOLCHAIN_HAS_THREADS_NPTL