diff --git a/src/sdltiles.cpp b/src/sdltiles.cpp
index c9ee7420a7d51..9540f4f7ce363 100644
--- a/src/sdltiles.cpp
+++ b/src/sdltiles.cpp
@@ -3409,7 +3409,7 @@ static void init_term_size_and_scaling_factor()
 
         int max_width, max_height;
 
-        int current_display_id = get_option<int>( "DISPLAY" );
+        int current_display_id = std::stoi( get_option<std::string>( "DISPLAY" ) );
         SDL_DisplayMode current_display;
 
         if( SDL_GetDesktopDisplayMode( current_display_id, &current_display ) == 0 ) {