1 files changed, 1 insertions, 1 deletions
diff --git a/lib/python/gfx.c b/lib/python/gfx.c
index cbb4eb09..98cc6cb4 100644
--- a/lib/python/gfx.c
+++ b/lib/python/gfx.c
@@ -72,7 +72,7 @@ static char* strf(char*format, ...)
     int l;
     va_list arglist;
     va_start(arglist, format);
-    vsprintf(buf, format, arglist);
+    vsnprintf(buf, sizeof(buf)-1, format, arglist);
     va_end(arglist);
     return strdup(buf);
 }