diff --git a/src/video_display/gl.c b/src/video_display/gl.c
index 00da3fa78..62599e11a 100644
--- a/src/video_display/gl.c
+++ b/src/video_display/gl.c
@@ -264,6 +264,7 @@ static void gl_load_splashscreen(struct state_gl *s)
         gl_reconfigure_screen(s);
 
         for (int i = 0; i < 2; ++i) {
+                const char *data = splash_data;
                 memset(s->buffers[i], 0, s->tile->data_len);
                 for (unsigned int y = 0; y < splash_height; ++y) {
                         char *line = s->buffers[i];
@@ -274,7 +275,7 @@ static void gl_load_splashscreen(struct state_gl *s)
                                         (s->tile->width - splash_width)/2,
                                         s->frame->color_spec);
                         for (unsigned int x = 0; x < splash_width; ++x) {
-                                HEADER_PIXEL(splash_data,line);
+                                HEADER_PIXEL(data,line);
                                 line += 4;
                         }
                 }
diff --git a/src/video_display/sdl.c b/src/video_display/sdl.c
index c97a1caac..091f73623 100644
--- a/src/video_display/sdl.c
+++ b/src/video_display/sdl.c
@@ -168,10 +168,11 @@ static void loadSplashscreen(struct state_sdl *s) {
 #endif
 
 	// load splash data
+        const char *data = splash_data;
 	for (y_coord = 0; y_coord < splash_height; y_coord++) {
 		for (x_coord = 0; x_coord < splash_width; x_coord++) {
 
-			HEADER_PIXEL(splash_data,pixel);
+			HEADER_PIXEL(data,pixel);
 			Uint32 color = SDL_MapRGB(image->format, pixel[0], pixel[1], pixel[2]);
 
 			switch(image->format->BytesPerPixel) {
diff --git a/src/video_display/splashscreen.h b/src/video_display/splashscreen.h
index 980e6c097..a5c405794 100644
--- a/src/video_display/splashscreen.h
+++ b/src/video_display/splashscreen.h
@@ -1,7 +1,7 @@
 /*  GIMP header image file format (RGB)  */
 
-static unsigned int splash_width = 339;
-static unsigned int splash_height = 195;
+static const unsigned int splash_width = 339;
+static const unsigned int splash_height = 195;
 
 /*  Call this macro repeatedly.  After each use, the pixel data can be extracted  */
 
@@ -11,7 +11,7 @@ pixel[1] = ((((data[1] - 33) & 0xF) << 4) | ((data[2] - 33) >> 2)); \
 pixel[2] = ((((data[2] - 33) & 0x3) << 6) | ((data[3] - 33))); \
 data += 4; \
 }
-static char *splash_data =
+static const char * const splash_data =
 	"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
 	"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
 	"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"