diff --git a/eeschema/sim/sim_model.cpp b/eeschema/sim/sim_model.cpp
index 61d9f24d6f..16e640256d 100644
--- a/eeschema/sim/sim_model.cpp
+++ b/eeschema/sim/sim_model.cpp
@@ -44,7 +44,7 @@
 #include <sim/sim_lib_mgr.h>
 #include <sim/sim_library_kibis.h>
 
-#include <boost/algorithm/string/case_conv.hpp>
+#include <boost/algorithm/string.hpp>
 #include <fmt/core.h>
 #include <pegtl/contrib/parse_tree.hpp>
 
@@ -816,13 +816,11 @@ const SIM_MODEL::PARAM& SIM_MODEL::GetParam( unsigned aParamIndex ) const
 
 int SIM_MODEL::doFindParam( const std::string& aParamName ) const
 {
-    std::string lowerParamName = boost::to_lower_copy( aParamName );
-
     std::vector<std::reference_wrapper<const PARAM>> params = GetParams();
 
     for( int ii = 0; ii < (int) params.size(); ++ii )
     {
-        if( params[ii].get().info.name == lowerParamName )
+        if( boost::iequals( params[ii].get().info.name, aParamName ) )
             return ii;
     }