diff --git a/package/haproxy/Config.in b/package/haproxy/Config.in
index fbe5941b55..cbcbc0c388 100644
--- a/package/haproxy/Config.in
+++ b/package/haproxy/Config.in
@@ -1,6 +1,7 @@
 config BR2_PACKAGE_HAPROXY
 	bool "haproxy"
 	depends on BR2_USE_MMU # fork()
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # __sync_*_4 intrisics
 	help
 	  HAProxy is a free, very fast and reliable solution offering
 	  high availability, load balancing, and proxying for TCP and