diff --git a/README.md b/README.md
index 05368b929..39ce5fd03 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm)
 
 ### Key features
 - Full compliant to the W3C Wasm MVP
-- Small runtime binary size (core vmlib on cortex-m4f with tail-call/bulk memroy/shared memroy support, text size from bloaty)
+- Small runtime binary size (core vmlib on cortex-m4f with tail-call/bulk memory/shared memory support, text size from bloaty)
   * ~58.9K for fast interpreter
   * ~56.3K for classic interpreter
   * ~29.4K for aot runtime
diff --git a/doc/ref_types.md b/doc/ref_types.md
index 7fefa999d..2cd300497 100644
--- a/doc/ref_types.md
+++ b/doc/ref_types.md
@@ -4,6 +4,6 @@ WebAssembly [reference-types](https://github.com/WebAssembly/reference-types) pr
 
 WAMR has implemented the reference-types proposal. WAMR allows a native method to pass a host object to a WASM application as an `externref` parameter or receives a host object from a WASM application as an `externref` result. Internally, WAMR won't try to parse or dereference `externref`. It is an opaque type.
 
-The restriction of using `externref` in a native method is the host object has to be the value of a `unintptr_t` variable. In other words, it takes **8 bytes** on 64-bit machine and **4 bytes** on 32-bit machines. Please keep that in mind especially when calling `wasm_runtime_call_wasm`.
+The restriction of using `externref` in a native method is the host object has to be the value of a `uintptr_t` variable. In other words, it takes **8 bytes** on 64-bit machine and **4 bytes** on 32-bit machines. Please keep that in mind especially when calling `wasm_runtime_call_wasm`.
 
 Please ref to the [sample](../samples/ref-types) for more details.
diff --git a/language-bindings/python/src/wamr/wasmcapi/ffi.py b/language-bindings/python/src/wamr/wasmcapi/ffi.py
index 82292335b..e8a084c14 100644
--- a/language-bindings/python/src/wamr/wasmcapi/ffi.py
+++ b/language-bindings/python/src/wamr/wasmcapi/ffi.py
@@ -112,12 +112,12 @@ def wasm_vec_to_list(vec):
         wasm_frame_vec_t,
         wasm_extern_vec_t,
     ]
-    known_vec_pointer_type = [POINTER(type) for type in known_vec_type]
+    known_vec_pointer_type = [POINTER(vec_type) for vec_type in known_vec_type]
 
-    if any([isinstance(vec, type) for type in known_vec_pointer_type]):
+    if any([isinstance(vec, pointer_type) for pointer_type in known_vec_pointer_type]):
         vec = dereference(vec)
         return [vec.data[i] for i in range(vec.num_elems)]
-    elif any([isinstance(vec, type) for type in known_vec_type]):
+    elif any([isinstance(vec, vec_type) for vec_type in known_vec_type]):
         return [vec.data[i] for i in range(vec.num_elems)]
     else:
         raise RuntimeError("not a known vector type")
@@ -405,7 +405,7 @@ def __compare_wasm_val_t(self, other):
     elif WASM_F32 == self.kind:
         return self.of.f32 == other.of.f32
     elif WASM_F64 == self.kind:
-        return self.of.f64 == other.of.f63
+        return self.of.f64 == other.of.f64
     elif WASM_EXTERNREF == self.kind:
         raise RuntimeError("FIXME")
     else:
diff --git a/samples/socket-api/sample_test_run.py b/samples/socket-api/sample_test_run.py
index ec0060281..6e9153b24 100755
--- a/samples/socket-api/sample_test_run.py
+++ b/samples/socket-api/sample_test_run.py
@@ -121,7 +121,6 @@ def main():
         print("\n================================")
         print("Test address resolving")
         cmd = "./iwasm --allow-resolve=*.com addr_resolve.wasm github.com"
-        cmd = "./multicast_server FF02:113D:6FDD:2C17:A643:FFE2:1BD1:3CD2"
         run_cmd(cmd, args.working_directory)
 
         # wait for a second