diff --git a/ipv6/aiccu/Makefile b/ipv6/aiccu/Makefile
index 1ec7de4ad..2c7056770 100644
--- a/ipv6/aiccu/Makefile
+++ b/ipv6/aiccu/Makefile
@@ -24,6 +24,7 @@ include $(INCLUDE_DIR)/package.mk
 define Package/aiccu
   SECTION:=ipv6
   CATEGORY:=IPv6
+  DEPENDS:=+libpthread
   TITLE:=SixXS Automatic IPv6 Connectivity Client Utility
   URL:=http://www.sixxs.net/archive/sixxs/aiccu/unix
 endef