diff --git a/gcc/params.opt b/gcc/params.opt
index 792287472890..3f1f6093c53a 100644
--- a/gcc/params.opt
+++ b/gcc/params.opt
@@ -912,23 +912,23 @@ Common Joined UInteger Var(param_switch_conversion_branch_ratio) Init(8) Integer
 The maximum ratio between array size and switch branches for a switch conversion to take place.
 
 -param=modref-max-bases=
-Common Joined UInteger Var(param_modref_max_bases) Init(32)
+Common Joined UInteger Var(param_modref_max_bases) Init(32) Param Optimization
 Maximum number of bases stored in each modref tree.
 
 -param=modref-max-refs=
-Common Joined UInteger Var(param_modref_max_refs) Init(16)
+Common Joined UInteger Var(param_modref_max_refs) Init(16) Param Optimization
 Maximum number of references stored in each modref base.
 
 -param=modref-max-accesses=
-Common Joined UInteger Var(param_modref_max_accesses) Init(16)
+Common Joined UInteger Var(param_modref_max_accesses) Init(16) Param Optimization
 Maximum number of accesse stored in each modref reference.
 
 -param=modref-max-tests=
-Common Joined UInteger Var(param_modref_max_tests) Init(64)
+Common Joined UInteger Var(param_modref_max_tests) Init(64) Param Optimization
 Maximum number of tests performed by modref query.
 
 -param=modref-max-depth=
-Common Joined UInteger Var(param_modref_max_depth) Init(256)
+Common Joined UInteger Var(param_modref_max_depth) Init(256) Param Optimization
 Maximum depth of DFS walk used by modref escape analysis.
 
 -param=tm-max-aggregate-size=