diff --git a/cmake/LV2Config.cmake b/cmake/LV2Config.cmake
index 5a6fb044..a7ca3cd1 100644
--- a/cmake/LV2Config.cmake
+++ b/cmake/LV2Config.cmake
@@ -62,7 +62,9 @@ function(sfizz_lv2_generate_controllers_ttl FILE)
 sfizz:cc${_i}
   a lv2:Parameter ;
   rdfs:label \"Controller ${_i}\" ;
-  rdfs:range atom:Float")
+  rdfs:range atom:Float ;
+  lv2:minimum 0.0 ;
+  lv2:maximum 1.0")
 
         if(_i LESS 128 AND NOT SFIZZ_LV2_PSA)
             math(EXPR _digit1 "${_i}>>4")