diff --git a/CMakeLists.txt b/CMakeLists.txt
index c9279c12..1dfea466 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -940,7 +940,6 @@ if(BACNET_STACK_BUILD_APPS)
   if(BACDL_BIP AND BACDL_BIP6)
     add_executable(
       router-ipv6
-      apps/router-ipv6/router-ipv6.h
       apps/router-ipv6/main.c)
     target_link_libraries(
       router-ipv6