diff --git a/CMakeLists.txt b/CMakeLists.txt
index ff39103..c9ca0ed 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -193,8 +193,6 @@
 	set( need_ext 0 )
 endif()
 
-unset( SKIP_EXTERNALS  CACHE )	# prevent these from being applied next build unless specifically set on comd line
-unset( PACK_EXTERNALS  CACHE )
 
 
 # this gets us round a chicken/egg problem. include files don't exist until make is run
@@ -297,7 +295,7 @@
 # (sure would be nice if FILEs allowed for globbing; sadlyy it does not.)
 #
 if( PACK_EXTERNALS )
-	message( "including nano and nng libraries in the deb" )
+	message( "+++ including nano and nng libraries in the deb" )
 	install( FILES
 		${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}/libnanomsg${nano_so_suffix}
 		${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}/libnanomsg${nano_so_suffix_m}
@@ -310,6 +308,9 @@
 	)
 endif()
 
+unset( SKIP_EXTERNALS  CACHE )	# prevent these from being applied next build unless specifically set on comd line
+unset( PACK_EXTERNALS  CACHE )
+
 IF( EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake" )
 	include( InstallRequiredSystemLibraries )