diff --git a/src/spfx.c b/src/spfx.c
index bc1cfe9..6f0a492 100644
--- a/src/spfx.c
+++ b/src/spfx.c
@@ -110,7 +110,7 @@ static int spfx_base_load(char* name, int ttl, int anim, char* gfx, int sx, int
   cur->name = strdup(name);
   cur->anim = (double)anim / 1000.;
   cur->ttl  = (double)ttl / 1000.;
-  sprintf(buf, SPFX_GFX"%s", gfx);
+  snprintf(buf, PATH_MAX, SPFX_GFX"%s", gfx);
   cur->gfx = gl_newSprite(buf, sx, sy, 0);
 
   return 0;