diff --git a/modules/gdscript/doc_classes/@GDScript.xml b/modules/gdscript/doc_classes/@GDScript.xml
index 00e743544b8..28b0ca554a2 100644
--- a/modules/gdscript/doc_classes/@GDScript.xml
+++ b/modules/gdscript/doc_classes/@GDScript.xml
@@ -788,7 +788,7 @@
 			<return type="void" />
 			<param index="0" name="mode" type="String" default="&quot;authority&quot;" />
 			<param index="1" name="sync" type="String" default="&quot;call_remote&quot;" />
-			<param index="2" name="transfer_mode" type="String" default="&quot;unreliable&quot;" />
+			<param index="2" name="transfer_mode" type="String" default="&quot;reliable&quot;" />
 			<param index="3" name="transfer_channel" type="int" default="0" />
 			<description>
 				Mark the following method for remote procedure calls. See [url=$DOCS_URL/tutorials/networking/high_level_multiplayer.html]High-level multiplayer[/url].
@@ -804,7 +804,7 @@
 				@rpc("any_peer", "unreliable_ordered")
 				func fn_update_pos(): pass
 
-				@rpc("authority", "call_remote", "unreliable", 0) # Equivalent to @rpc
+				@rpc("authority", "call_remote", "reliable", 0) # Equivalent to @rpc
 				func fn_default(): pass
 				[/codeblock]
 				[b]Note:[/b] Methods annotated with [annotation @rpc] cannot receive objects which define required parameters in [method Object._init]. See [method Object._init] for more details.
diff --git a/modules/gdscript/gdscript_parser.cpp b/modules/gdscript/gdscript_parser.cpp
index 6e955969ba3..d34079447de 100644
--- a/modules/gdscript/gdscript_parser.cpp
+++ b/modules/gdscript/gdscript_parser.cpp
@@ -186,7 +186,8 @@ GDScriptParser::GDScriptParser() {
 		register_annotation(MethodInfo("@warning_ignore_start", PropertyInfo(Variant::STRING, "warning")), AnnotationInfo::STANDALONE, &GDScriptParser::warning_ignore_region_annotations, varray(), true);
 		register_annotation(MethodInfo("@warning_ignore_restore", PropertyInfo(Variant::STRING, "warning")), AnnotationInfo::STANDALONE, &GDScriptParser::warning_ignore_region_annotations, varray(), true);
 		// Networking.
-		register_annotation(MethodInfo("@rpc", PropertyInfo(Variant::STRING, "mode"), PropertyInfo(Variant::STRING, "sync"), PropertyInfo(Variant::STRING, "transfer_mode"), PropertyInfo(Variant::INT, "transfer_channel")), AnnotationInfo::FUNCTION, &GDScriptParser::rpc_annotation, varray("authority", "call_remote", "unreliable", 0));
+		// Keep in sync with `rpc_annotation()` and `SceneRPCInterface::_parse_rpc_config()`.
+		register_annotation(MethodInfo("@rpc", PropertyInfo(Variant::STRING, "mode"), PropertyInfo(Variant::STRING, "sync"), PropertyInfo(Variant::STRING, "transfer_mode"), PropertyInfo(Variant::INT, "transfer_channel")), AnnotationInfo::FUNCTION, &GDScriptParser::rpc_annotation, varray("authority", "call_remote", "reliable", 0));
 	}
 
 #ifdef DEBUG_ENABLED
@@ -5199,6 +5200,7 @@ bool GDScriptParser::rpc_annotation(AnnotationNode *p_annotation, Node *p_target
 		return false;
 	}
 
+	// Default values should match the annotation registration defaults and `SceneRPCInterface::_parse_rpc_config()`.
 	Dictionary rpc_config;
 	rpc_config["rpc_mode"] = MultiplayerAPI::RPC_MODE_AUTHORITY;
 	if (!p_annotation->resolved_arguments.is_empty()) {
diff --git a/modules/multiplayer/scene_rpc_interface.cpp b/modules/multiplayer/scene_rpc_interface.cpp
index da9df1e8c76..68e177918a5 100644
--- a/modules/multiplayer/scene_rpc_interface.cpp
+++ b/modules/multiplayer/scene_rpc_interface.cpp
@@ -84,6 +84,7 @@ void SceneRPCInterface::_parse_rpc_config(const Variant &p_config, bool p_for_no
 		ERR_CONTINUE(config[name].get_type() != Variant::DICTIONARY);
 		ERR_CONTINUE(!config[name].operator Dictionary().has("rpc_mode"));
 		Dictionary dict = config[name];
+		// Default values should match GDScript `@rpc` annotation registration and `rpc_annotation()`.
 		RPCConfig cfg;
 		cfg.name = name;
 		cfg.rpc_mode = ((MultiplayerAPI::RPCMode)dict.get("rpc_mode", MultiplayerAPI::RPC_MODE_AUTHORITY).operator int());