diff --git a/src/ast/bv_decl_plugin.cpp b/src/ast/bv_decl_plugin.cpp
index d01ed8b75..645088e3e 100644
--- a/src/ast/bv_decl_plugin.cpp
+++ b/src/ast/bv_decl_plugin.cpp
@@ -718,7 +718,7 @@ void bv_decl_plugin::get_op_names(svector<builtin_name> & op_names, symbol const
     op_names.push_back(builtin_name("rotate_right",OP_ROTATE_RIGHT));
     op_names.push_back(builtin_name("bit2bool", OP_BIT2BOOL));
 
-    if (logic == symbol::null || logic == symbol("ALL") || logic == "QF_FD") {
+    if (logic == symbol::null || logic == symbol("ALL") || logic == "QF_FD" || logic == "HORN") {
         op_names.push_back(builtin_name("bvumul_noovfl",OP_BUMUL_NO_OVFL));
         op_names.push_back(builtin_name("bvsmul_noovfl",OP_BSMUL_NO_OVFL));
         op_names.push_back(builtin_name("bvsmul_noudfl",OP_BSMUL_NO_UDFL));