diff --git a/doomclassic/doom/f_finale.cpp b/doomclassic/doom/f_finale.cpp
index 79dafc9a..65df7447 100644
--- a/doomclassic/doom/f_finale.cpp
+++ b/doomclassic/doom/f_finale.cpp
@@ -766,7 +766,7 @@ void F_BunnyScroll (void)
 	::g->laststage = stage;
     }
 	
-    sprintf (name,"END%i",stage);
+    snprintf (name, strlen(name), "END%i",stage);
     V_DrawPatch ((ORIGINAL_WIDTH-13*8)/2, (ORIGINAL_HEIGHT-8*8)/2,0, (patch_t*)W_CacheLumpName (name,PU_CACHE_SHARED));
 }
 
diff --git a/doomclassic/doom/hu_stuff.cpp b/doomclassic/doom/hu_stuff.cpp
index b379ef54..73b0ada8 100644
--- a/doomclassic/doom/hu_stuff.cpp
+++ b/doomclassic/doom/hu_stuff.cpp
@@ -327,7 +327,7 @@ void HU_Init(void)
 	j = HU_FONTSTART;
 	for (i=0;i<HU_FONTSIZE;i++)
 	{
-		sprintf(buffer, "STCFN%.3d", j++);
+		snprintf(buffer, strlen(buffer), "STCFN%.3d", j++);
 		::g->hu_font[i] = (patch_t *) W_CacheLumpName(buffer, PU_STATIC_SHARED);
 	}