1 files changed, 8 insertions, 0 deletions
diff --git a/driver.c b/driver.c
index c3224b9a..aba38f09 100644
--- a/driver.c
+++ b/driver.c
@@ -1747,7 +1747,11 @@ va_dcl
 #else
     va_start(ap);
 #endif
+#ifdef HAVE_VSNPRINTF
+    vsnprintf(buf + strlen(buf), sizeof(buf), fmt, ap);
+#else
     vsprintf(buf + strlen(buf), fmt, ap);
+#endif
     va_end(ap);
 
     strcat(buf, "\r\n");
@@ -1817,7 +1821,11 @@ va_dcl
 #else
     va_start(ap);
 #endif
+#ifdef HAVE_VSNPRINTF
+    vsnprintf(buf + strlen(buf), sizeof(buf), fmt, ap);
+#else
     vsprintf(buf + strlen(buf), fmt, ap);
+#endif
     va_end(ap);
 
     strcat(buf, "\r\n");