diff --git a/similar/arch/ogl/gr.cpp b/similar/arch/ogl/gr.cpp
index 1a3de9f70..6140908ed 100644
--- a/similar/arch/ogl/gr.cpp
+++ b/similar/arch/ogl/gr.cpp
@@ -776,7 +776,8 @@ int gr_init()
 
 	ogl_init_texture_list_internal();
 
-	grd_curscreen = make_unique<grs_screen, grs_screen>({});
+	grd_curscreen = make_unique<grs_screen>();
+	*grd_curscreen = {};
 	grd_curscreen->sc_canvas.cv_bitmap.bm_data = NULL;
 
 	// Set the mode.
diff --git a/similar/arch/sdl/gr.cpp b/similar/arch/sdl/gr.cpp
index 16c53a4a6..1a9408c4f 100644
--- a/similar/arch/sdl/gr.cpp
+++ b/similar/arch/sdl/gr.cpp
@@ -174,7 +174,8 @@ int gr_init()
 		Error("SDL library video initialisation failed: %s.",SDL_GetError());
 	}
 
-	grd_curscreen = make_unique<grs_screen, grs_screen>({});
+	grd_curscreen = make_unique<grs_screen>();
+	*grd_curscreen = {};
 
 	if (!CGameCfg.WindowMode && !CGameArg.SysWindow)
 		sdl_video_flags|=SDL_FULLSCREEN;
diff --git a/similar/main/credits.cpp b/similar/main/credits.cpp
index bf18c0993..ee31273b9 100644
--- a/similar/main/credits.cpp
+++ b/similar/main/credits.cpp
@@ -223,7 +223,8 @@ void credits_show(const char *credits_filename)
 	const char *filename = CREDITS_FILE;
 	palette_array_t backdrop_palette;
 	
-	auto cr = make_unique<credits, credits>({});
+	auto cr = make_unique<credits>();
+	*cr = {};
 	if (credits_filename) {
 		filename = credits_filename;
 		cr->have_bin_file = 1;