diff --git a/src/item_factory.cpp b/src/item_factory.cpp
index 63d7ad49f4760..e5707432f8e09 100644
--- a/src/item_factory.cpp
+++ b/src/item_factory.cpp
@@ -1365,7 +1365,8 @@ void Item_factory::finalize_item_blacklist()
         const migration *parent = nullptr;
         for( const migration &migrant : migrate.second ) {
             if( m_templates.count( migrant.replace ) == 0 ) {
-                debugmsg( "Replacement item for migration %s does not exist", migrate.first.c_str() );
+                debugmsg( "Replacement item (%s) for migration %s does not exist", migrant.replace.str(),
+                          migrate.first.c_str() );
                 continue;
             }
             // The rest of this only applies to blanket migrations