diff --git a/core/iwasm/interpreter/wasm_loader.c b/core/iwasm/interpreter/wasm_loader.c
index 09e3f47e..61e30be7 100644
--- a/core/iwasm/interpreter/wasm_loader.c
+++ b/core/iwasm/interpreter/wasm_loader.c
@@ -301,7 +301,13 @@ check_utf8_str(const uint8 *str, uint32 len)
 
     while (p < p_end) {
         chr = *p;
-        if (chr < 0x80) {
+
+        if (chr == 0) {
+            LOG_WARNING(
+                "LIMITATION: a string which contains '\\00' is unsupported");
+            return false;
+        }
+        else if (chr < 0x80) {
             p++;
         }
         else if (chr >= 0xC2 && chr <= 0xDF && p + 1 < p_end) {