diff --git a/Help/prop_tgt/INTERPROCEDURAL_OPTIMIZATION.rst b/Help/prop_tgt/INTERPROCEDURAL_OPTIMIZATION.rst
index 3f68c3128a..d3a5e94147 100644
--- a/Help/prop_tgt/INTERPROCEDURAL_OPTIMIZATION.rst
+++ b/Help/prop_tgt/INTERPROCEDURAL_OPTIMIZATION.rst
@@ -4,7 +4,9 @@ INTERPROCEDURAL_OPTIMIZATION
 Enable interprocedural optimization for a target.
 
 If set to true, enables interprocedural optimizations if they are
-known to be supported by the compiler.
+known :module:`to be supported <CheckIPOSupported>` by the compiler. Depending
+on value of policy :policy:`CMP0069`, the error will be reported or ignored,
+if interprocedural optimization is enabled but not supported.
 
 This property is initialized by the
 :variable:`CMAKE_INTERPROCEDURAL_OPTIMIZATION` variable if it is set when a