diff --git a/src/blitter/32bpp_anim.cpp b/src/blitter/32bpp_anim.cpp
--- a/src/blitter/32bpp_anim.cpp
+++ b/src/blitter/32bpp_anim.cpp
@@ -307,7 +307,7 @@ void Blitter_32bppAnim::DrawColourMappin
 		return;
 	}
 
-	DEBUG(misc, 0, "32bpp blitter doesn't know how to draw this colour table ('%d')", pal);
+	Debug(misc, 0, "32bpp blitter doesn't know how to draw this colour table ('{}')", pal);
 }
 
 void Blitter_32bppAnim::SetPixel(void *video, int x, int y, uint8 colour)