diff --git a/similar/arch/ogl/gr.cpp b/similar/arch/ogl/gr.cpp
index 390ca94ec..5cab50612 100644
--- a/similar/arch/ogl/gr.cpp
+++ b/similar/arch/ogl/gr.cpp
@@ -660,7 +660,7 @@ int gr_set_mode(screen_mode mode)
 	const uint_fast32_t w = SM_W(mode), h = SM_H(mode);
 
 	gr_bm_data = grd_curscreen->sc_canvas.cv_bitmap.get_bitmap_data();//since we use realloc, we want to keep this pointer around.
-	unsigned char *gr_new_bm_data = (unsigned char *)d_realloc(gr_bm_data,w*h);
+	auto gr_new_bm_data = reinterpret_cast<uint8_t *>(d_realloc(gr_bm_data, w * h));
 	if (!gr_new_bm_data)
 		return 0;
 	*grd_curscreen = {};
diff --git a/similar/arch/ogl/ogl.cpp b/similar/arch/ogl/ogl.cpp
index c8b5ce540..8c046ff28 100644
--- a/similar/arch/ogl/ogl.cpp
+++ b/similar/arch/ogl/ogl.cpp
@@ -913,7 +913,7 @@ void _g3_draw_tmap(unsigned nv, const g3s_point *const *const pointlist, const g
 	} else if (tmap_drawer_ptr == draw_tmap_flat) {
 		OGL_DISABLE(TEXTURE_2D);
 		/* for cloaked state faces */
-		color_alpha = 1.0 - (grd_curcanv->cv_fade_level/(GLfloat)NUM_LIGHTING_LEVELS);
+		color_alpha = 1.0 - (grd_curcanv->cv_fade_level/ static_cast<GLfloat>(NUM_LIGHTING_LEVELS));
 	} else {
 		glmprintf((0,"g3_draw_tmap: unhandled tmap_drawer %p\n",tmap_drawer_ptr));
 		return;