diff --git a/core/iwasm/libraries/libc-wasi/libc_wasi_wrapper.c b/core/iwasm/libraries/libc-wasi/libc_wasi_wrapper.c
index 5ab189e71d..d577dfb5d6 100644
--- a/core/iwasm/libraries/libc-wasi/libc_wasi_wrapper.c
+++ b/core/iwasm/libraries/libc-wasi/libc_wasi_wrapper.c
@@ -2009,10 +2009,6 @@ allocate_iovec_app_buffer(wasm_module_inst_t module_inst,
     uint32 i;
     uint8 *buf_begin = NULL;
 
-    if (data_len == 0) {
-        return __WASI_EINVAL;
-    }
-
     total_size = sizeof(iovec_app_t) * (uint64)data_len;
     if (total_size >= UINT32_MAX
         || !validate_native_addr((void *)data, total_size))
@@ -2022,12 +2018,9 @@ allocate_iovec_app_buffer(wasm_module_inst_t module_inst,
         total_size += data->buf_len;
     }
 
-    if (total_size == 0) {
-        return __WASI_EINVAL;
-    }
-
     if (total_size >= UINT32_MAX
-        || !(buf_begin = wasm_runtime_malloc((uint32)total_size))) {
+        || !(buf_begin =
+                 wasm_runtime_malloc(total_size ? (uint32)total_size : 1))) {
         return __WASI_ENOMEM;
     }