diff --git a/rust/test/shared/accessors_test.rs b/rust/test/shared/accessors_test.rs
index b33b51a1e0..a0d21890fe 100644
--- a/rust/test/shared/accessors_test.rs
+++ b/rust/test/shared/accessors_test.rs
@@ -34,14 +34,16 @@ use unittest_proto::proto2_unittest::TestAllTypes;
 #[test]
 fn test_default_accessors() {
     let msg = TestAllTypes::new();
-    assert_eq!(msg.default_fixed32(), 47);
-    assert_eq!(msg.default_fixed64(), 48);
     assert_eq!(msg.default_int32(), 41);
     assert_eq!(msg.default_int64(), 42);
-    assert_eq!(msg.default_sint32(), -45);
-    assert_eq!(msg.default_sint64(), 46);
     assert_eq!(msg.default_uint32(), 43);
     assert_eq!(msg.default_uint64(), 44);
+    assert_eq!(msg.default_sint32(), -45);
+    assert_eq!(msg.default_sint64(), 46);
+    assert_eq!(msg.default_fixed32(), 47);
+    assert_eq!(msg.default_fixed64(), 48);
+    assert_eq!(msg.default_sfixed32(), 49);
+    assert_eq!(msg.default_sfixed64(), -50);
     assert_eq!(msg.default_float(), 51.5);
     assert_eq!(msg.default_double(), 52000.0);
     assert_eq!(msg.default_bool(), true);
diff --git a/src/google/protobuf/compiler/rust/accessors/accessors.cc b/src/google/protobuf/compiler/rust/accessors/accessors.cc
index 728dba2f57..d0b5ffaa39 100644
--- a/src/google/protobuf/compiler/rust/accessors/accessors.cc
+++ b/src/google/protobuf/compiler/rust/accessors/accessors.cc
@@ -53,6 +53,8 @@ std::unique_ptr<AccessorGenerator> AccessorGenerator::For(
     case FieldDescriptor::TYPE_INT64:
     case FieldDescriptor::TYPE_FIXED32:
     case FieldDescriptor::TYPE_FIXED64:
+    case FieldDescriptor::TYPE_SFIXED32:
+    case FieldDescriptor::TYPE_SFIXED64:
     case FieldDescriptor::TYPE_SINT32:
     case FieldDescriptor::TYPE_SINT64:
     case FieldDescriptor::TYPE_UINT32:
diff --git a/src/google/protobuf/compiler/rust/naming.cc b/src/google/protobuf/compiler/rust/naming.cc
index 2cb3897b10..ee2cb924b2 100644
--- a/src/google/protobuf/compiler/rust/naming.cc
+++ b/src/google/protobuf/compiler/rust/naming.cc
@@ -111,20 +111,18 @@ absl::string_view PrimitiveRsTypeName(Context<FieldDescriptor> field) {
   switch (field.desc().type()) {
     case FieldDescriptor::TYPE_BOOL:
       return "bool";
-    case FieldDescriptor::TYPE_FIXED32:
-      return "i32";
-    case FieldDescriptor::TYPE_FIXED64:
-      return "i64";
     case FieldDescriptor::TYPE_INT32:
-      return "i32";
-    case FieldDescriptor::TYPE_INT64:
-      return "i64";
     case FieldDescriptor::TYPE_SINT32:
+    case FieldDescriptor::TYPE_SFIXED32:
       return "i32";
+    case FieldDescriptor::TYPE_INT64:
     case FieldDescriptor::TYPE_SINT64:
+    case FieldDescriptor::TYPE_SFIXED64:
       return "i64";
+    case FieldDescriptor::TYPE_FIXED32:
     case FieldDescriptor::TYPE_UINT32:
       return "u32";
+    case FieldDescriptor::TYPE_FIXED64:
     case FieldDescriptor::TYPE_UINT64:
       return "u64";
     case FieldDescriptor::TYPE_FLOAT:
@@ -140,25 +138,6 @@ absl::string_view PrimitiveRsTypeName(Context<FieldDescriptor> field) {
   return "";
 }
 
-bool IsSupportedFieldType(Context<FieldDescriptor> field) {
-  return !field.desc().is_repeated() &&
-         // We do not support [ctype=FOO] (used to set the field type in C++ to
-         // cord or string_piece) in V0 API.
-         !field.desc().options().has_ctype() &&
-         (field.desc().type() == FieldDescriptor::TYPE_BOOL ||
-          field.desc().type() == FieldDescriptor::TYPE_FIXED32 ||
-          field.desc().type() == FieldDescriptor::TYPE_FIXED64 ||
-          field.desc().type() == FieldDescriptor::TYPE_INT32 ||
-          field.desc().type() == FieldDescriptor::TYPE_INT64 ||
-          field.desc().type() == FieldDescriptor::TYPE_SINT32 ||
-          field.desc().type() == FieldDescriptor::TYPE_SINT64 ||
-          field.desc().type() == FieldDescriptor::TYPE_UINT32 ||
-          field.desc().type() == FieldDescriptor::TYPE_UINT64 ||
-          field.desc().type() == FieldDescriptor::TYPE_FLOAT ||
-          field.desc().type() == FieldDescriptor::TYPE_DOUBLE ||
-          field.desc().type() == FieldDescriptor::TYPE_BYTES);
-}
-
 std::string RustModule(Context<Descriptor> msg) {
   absl::string_view package = msg.desc().file()->package();
   if (package.empty()) return "";
diff --git a/src/google/protobuf/compiler/rust/naming.h b/src/google/protobuf/compiler/rust/naming.h
index 07dba8796e..757e08df57 100644
--- a/src/google/protobuf/compiler/rust/naming.h
+++ b/src/google/protobuf/compiler/rust/naming.h
@@ -51,8 +51,6 @@ std::string GetHeaderFile(Context<FileDescriptor> file);
 std::string Thunk(Context<FieldDescriptor> field, absl::string_view op);
 std::string Thunk(Context<Descriptor> msg, absl::string_view op);
 
-bool IsSupportedFieldType(Context<FieldDescriptor> field);
-
 absl::string_view PrimitiveRsTypeName(Context<FieldDescriptor> field);
 
 std::string FieldInfoComment(Context<FieldDescriptor> field);