diff --git a/package/iozone/Config.in b/package/iozone/Config.in
index 26d4daafe0..33e12ca77c 100644
--- a/package/iozone/Config.in
+++ b/package/iozone/Config.in
@@ -1,6 +1,7 @@
 config BR2_PACKAGE_IOZONE
 	bool "iozone"
 	depends on BR2_USE_MMU # fork()
+	depends on !BR2_UCLIBC_VERSION_0_9_31 # no pthread_setaffinity_np
 	help
 	  IOzone is a filesystem benchmark tool.
 	  The benchmark generates and measures a variety of file operations