diff --git a/Source/cmTargetLinkLibrariesCommand.h b/Source/cmTargetLinkLibrariesCommand.h
index 34fe54c34..3da395089 100644
--- a/Source/cmTargetLinkLibrariesCommand.h
+++ b/Source/cmTargetLinkLibrariesCommand.h
@@ -93,7 +93,9 @@ public:
       "linked to this target will appear on the link line for the other "
       "target too.  "
       "See the LINK_INTERFACE_LIBRARIES target property to override the "
-      "set of transitive link dependencies for a target."
+      "set of transitive link dependencies for a target.  "
+      "Calls to other signatures of this command may set the property "
+      "making any libraries linked exclusively by this signature private."
       "\n"
       "  target_link_libraries(<target> LINK_INTERFACE_LIBRARIES\n"
       "                        [[debug|optimized|general] <lib>] ...)\n"