diff --git a/ci/generate_checked_functions.py b/ci/generate_checked_functions.py
index faa8a275e..28c04887b 100644
--- a/ci/generate_checked_functions.py
+++ b/ci/generate_checked_functions.py
@@ -268,6 +268,27 @@ def generate_checked_headers(header_paths):
             for node in ast.ext
             if isinstance(node, c_ast.Decl) and isinstance(node.type, c_ast.FuncDecl)
         ]
+        # remove std headers functions
+        functions = [
+            f
+            for f in functions
+            if f.name
+            not in (
+                "__mempcpy",
+                "__stpcpy",
+                "memmem",
+                "memmove",
+                "mempcpy",
+                "memset",
+                "strcasestr",
+                "strcat",
+                "strchrnul",
+                "strcmp",
+                "strlcat",
+                "strlcpy",
+                "strlen",
+            )
+        ]
         functions = sorted(functions, key=lambda f: f.name)
 
         return_types = {
diff --git a/core/iwasm/include/wasm_c_api_checked.h b/core/iwasm/include/wasm_c_api_checked.h
index 05a758243..83e73a319 100644
--- a/core/iwasm/include/wasm_c_api_checked.h
+++ b/core/iwasm/include/wasm_c_api_checked.h
@@ -130,27 +130,6 @@ __memcmpeq_checked(void *__s1, void *__s2, size_t __n)
     return res;
 }
 
-static inline Result
-__stpcpy_checked(void *__dest, void *__src)
-{
-    Result res;
-    // Check for null pointer parameter: __dest
-    if (__dest == NULL) {
-        res.error_code = -1;
-        return res;
-    }
-    // Check for null pointer parameter: __src
-    if (__src == NULL) {
-        res.error_code = -1;
-        return res;
-    }
-    // Execute the original function
-    __stpcpy(__dest, __src);
-    // Assign return value and error code
-    res.error_code = 0;
-    return res;
-}
-
 static inline Result
 __stpncpy_checked(void *__dest, void *__src, size_t __n)
 {
@@ -430,43 +409,6 @@ memcpy_checked(void *__dest, void *__src, size_t __n)
     return res;
 }
 
-static inline Result
-memmove_checked(void *__dest, void *__src, size_t __n)
-{
-    Result res;
-    // Check for null pointer parameter: __dest
-    if (__dest == NULL) {
-        res.error_code = -1;
-        return res;
-    }
-    // Check for null pointer parameter: __src
-    if (__src == NULL) {
-        res.error_code = -1;
-        return res;
-    }
-    // Execute the original function
-    memmove(__dest, __src, __n);
-    // Assign return value and error code
-    res.error_code = 0;
-    return res;
-}
-
-static inline Result
-memset_checked(void *__s, int __c, size_t __n)
-{
-    Result res;
-    // Check for null pointer parameter: __s
-    if (__s == NULL) {
-        res.error_code = -1;
-        return res;
-    }
-    // Execute the original function
-    memset(__s, __c, __n);
-    // Assign return value and error code
-    res.error_code = 0;
-    return res;
-}
-
 static inline Result
 rindex_checked(void *__s, int __c)
 {
@@ -579,27 +521,6 @@ strcasecmp_l_checked(void *__s1, void *__s2, locale_t __loc)
     return res;
 }
 
-static inline Result
-strcat_checked(void *__dest, void *__src)
-{
-    Result res;
-    // Check for null pointer parameter: __dest
-    if (__dest == NULL) {
-        res.error_code = -1;
-        return res;
-    }
-    // Check for null pointer parameter: __src
-    if (__src == NULL) {
-        res.error_code = -1;
-        return res;
-    }
-    // Execute the original function
-    strcat(__dest, __src);
-    // Assign return value and error code
-    res.error_code = 0;
-    return res;
-}
-
 static inline Result
 strchr_checked(void *__s, int __c)
 {
@@ -616,33 +537,6 @@ strchr_checked(void *__s, int __c)
     return res;
 }
 
-static inline Result
-strcmp_checked(void *__s1, void *__s2)
-{
-    Result res;
-    // Check for null pointer parameter: __s1
-    if (__s1 == NULL) {
-        res.error_code = -1;
-        return res;
-    }
-    // Check for null pointer parameter: __s2
-    if (__s2 == NULL) {
-        res.error_code = -1;
-        return res;
-    }
-    // Execute the original function
-    int original_result = strcmp(__s1, __s2);
-    // Assign return value and error code
-    if (original_result == 0) {
-        res.error_code = 0;
-        res.value.int_value = original_result;
-    }
-    else {
-        res.error_code = -2;
-    }
-    return res;
-}
-
 static inline Result
 strcoll_checked(void *__s1, void *__s2)
 {
@@ -805,28 +699,6 @@ strerror_r_checked(int __errnum, void *__buf, size_t __buflen)
     return res;
 }
 
-static inline Result
-strlen_checked(void *__s)
-{
-    Result res;
-    // Check for null pointer parameter: __s
-    if (__s == NULL) {
-        res.error_code = -1;
-        return res;
-    }
-    // Execute the original function
-    size_t original_result = strlen(__s);
-    // Assign return value and error code
-    if (original_result == 0) {
-        res.error_code = 0;
-        res.value.size_t_value = original_result;
-    }
-    else {
-        res.error_code = -2;
-    }
-    return res;
-}
-
 static inline Result
 strncasecmp_checked(void *__s1, void *__s2, size_t __n)
 {