diff --git a/asterisk-1.8.x-mod/Makefile b/asterisk-1.8.x-mod/Makefile
index 1da4355c9..7126d3d5f 100644
--- a/asterisk-1.8.x-mod/Makefile
+++ b/asterisk-1.8.x-mod/Makefile
@@ -19,7 +19,7 @@ PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION)-$(PKG_RELEASE).tar.
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
 
-include $(INCLUDE_DIR)/ltqtapi.mk
+-include $(INCLUDE_DIR)/ltqtapi.mk
 include $(INCLUDE_DIR)/package.mk
 
 define Package/asterisk18-mod/Default