diff --git a/package/hiawatha/Config.in b/package/hiawatha/Config.in
index 68e47fde87..8f1908f6f4 100644
--- a/package/hiawatha/Config.in
+++ b/package/hiawatha/Config.in
@@ -1,11 +1,13 @@
 comment "hiawatha needs a toolchain w/ threads, dynamic library"
 	depends on BR2_USE_MMU
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS
 
 config BR2_PACKAGE_HIAWATHA
 	bool "hiawatha"
 	# needs fork()
 	depends on BR2_USE_MMU
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # __sync_*_4 intrisics
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	depends on !BR2_STATIC_LIBS
 	select BR2_PACKAGE_ZLIB