diff --git a/components/console/argtable3/arg_dstr.c b/components/console/argtable3/arg_dstr.c
index 6e6cf6b007..0438e6fe07 100644
--- a/components/console/argtable3/arg_dstr.c
+++ b/components/console/argtable3/arg_dstr.c
@@ -221,7 +221,7 @@ void arg_dstr_catc(arg_dstr_t ds, char c) {
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 void arg_dstr_catf(arg_dstr_t ds, const char* fmt, ...) {
-    va_list arglist;
+    va_list arglist = {0};
     char* buff;
     int n, r;
     size_t slen;
diff --git a/components/console/argtable3/arg_utils.c b/components/console/argtable3/arg_utils.c
index f10034fd5c..486e2ed0ce 100644
--- a/components/console/argtable3/arg_utils.c
+++ b/components/console/argtable3/arg_utils.c
@@ -50,14 +50,14 @@ static void panic(const char* fmt, ...);
 static arg_panicfn* s_panic = panic;
 
 void dbg_printf(const char* fmt, ...) {
-    va_list args;
+    va_list args = {0};
     va_start(args, fmt);
     vfprintf(stderr, fmt, args);
     va_end(args);
 }
 
 static void panic(const char* fmt, ...) {
-    va_list args;
+    va_list args = {0};
     char* s;
 
     va_start(args, fmt);