diff --git a/substrate/core/client/src/runtime_api/macros.rs b/substrate/core/client/src/runtime_api/macros.rs
index b58f2143c8..1721fbd416 100644
--- a/substrate/core/client/src/runtime_api/macros.rs
+++ b/substrate/core/client/src/runtime_api/macros.rs
@@ -465,14 +465,20 @@ macro_rules! impl_runtime_apis {
 			)*
 		}
 		impl_runtime_apis! {
+			@EXTEND_FUNCTIONS
 			$runtime;
-			$( $fn_name ( $( $arg_name: $arg_ty ),* ); )*;
+			;
+			$trait_name;
+			$( $( $generic ),* )*;
+			{ $( $fn_name ( $( $arg_name: $arg_ty ),* ); )* }
 			$( $rest )*
 		}
 	};
 	(
 		$runtime:ident;
-		$( $fn_name_parsed:ident ( $( $arg_name_parsed:ident : $arg_ty_parsed:ty ),* ); )*;
+		$( $trait_name_parsed:ident $( < $( $parsed_generic:ident ),* > )*::$fn_name_parsed:ident (
+			$( $arg_name_parsed:ident : $arg_ty_parsed:ty ),* );
+		)*;
 		impl $trait_name:ident $( < $( $generic:ident ),* > )* for $runtime_ignore:ident {
 			$(
 				fn $fn_name:ident ( $( $arg_name:ident : $arg_ty:ty ),* ) $( -> $return_ty:ty )* {
@@ -490,15 +496,73 @@ macro_rules! impl_runtime_apis {
 			)*
 		}
 		impl_runtime_apis! {
+			@EXTEND_FUNCTIONS
 			$runtime;
-			$( $fn_name_parsed ( $( $arg_name_parsed: $arg_ty_parsed ),* ); )*
-			$( $fn_name ( $( $arg_name: $arg_ty ),* ); )*;
+			$(
+				$trait_name_parsed $( < $( $parsed_generic ),* > )*
+					::$fn_name_parsed ( $( $arg_name_parsed: $arg_ty_parsed ),* );
+			)*;
+			$trait_name;
+			$( $( $generic ),* )*;
+			{ $( $fn_name ( $( $arg_name: $arg_ty ),* ); )* }
+			$( $rest )*
+		}
+	};
+	(@EXTEND_FUNCTIONS
+		$runtime:ident;
+		$( $trait_name_parsed:ident $( < $( $parsed_generic:ident ),* > )*::$fn_name_parsed:ident (
+			$( $arg_name_parsed:ident : $arg_ty_parsed:ty ),* );
+		)*;
+		$trait_name:ident;
+		$( $generic:ident ),*;
+		{
+			$fn_name_extend:ident ( $( $arg_name_extend:ident : $arg_ty_extend:ty ),* );
+			$( $extend_rest:tt )*
+		}
+		$( $rest:tt )*
+	) => {
+		impl_runtime_apis! {
+			@EXTEND_FUNCTIONS
+			$runtime;
+			$(
+				$trait_name_parsed $( < $( $parsed_generic ),* > )*
+					::$fn_name_parsed ( $( $arg_name_parsed: $arg_ty_parsed ),* );
+			)*
+			$trait_name < $( $generic ),* >
+				::$fn_name_extend ( $( $arg_name_extend: $arg_ty_extend ),* );;
+			$trait_name;
+			$( $generic ),*;
+			{
+				$( $extend_rest )*
+			}
+			$( $rest )*
+		}
+	};
+	(@EXTEND_FUNCTIONS
+		$runtime:ident;
+		$( $trait_name_parsed:ident $( < $( $parsed_generic:ident ),* > )*::$fn_name_parsed:ident (
+			$( $arg_name_parsed:ident : $arg_ty_parsed:ty ),* );
+		)*;
+		$trait_name:ident;
+		$( $generic:ident ),*;
+		{}
+		$( $rest:tt )*
+	) => {
+		impl_runtime_apis! {
+			$runtime;
+			$(
+				$trait_name_parsed $( < $( $parsed_generic ),* > )*
+					::$fn_name_parsed ( $( $arg_name_parsed: $arg_ty_parsed ),* );
+			)*;
 			$( $rest )*
 		}
 	};
 	(
 		$runtime:ident;
-		$( $fn_name:ident ( $( $arg_name:ident : $arg_ty:ty ),* ); )*;
+		$(
+			$trait_name:ident $( < $( $generic:ident ),* > )*
+				::$fn_name:ident ( $( $arg_name:ident : $arg_ty:ty ),* );
+		)*;
 	) => {
 		pub mod api {
 			use super::*;
@@ -511,6 +575,7 @@ macro_rules! impl_runtime_apis {
 							Some({impl_runtime_apis! {
 								@GENERATE_IMPL_CALL
 								$runtime;
+								$trait_name $( < $( $generic ),* > )*;
 								$fn_name;
 								$( $arg_name : $arg_ty ),*;
 								data;
@@ -536,6 +601,7 @@ macro_rules! impl_runtime_apis {
 					let output = { impl_runtime_apis! {
 						@GENERATE_IMPL_CALL
 						$runtime;
+						$trait_name $( < $( $generic ),* > )*;
 						$fn_name;
 						$( $arg_name : $arg_ty ),*;
 						input;
@@ -553,6 +619,7 @@ macro_rules! impl_runtime_apis {
 	};
 	(@GENERATE_IMPL_CALL
 		$runtime:ident;
+		$trait_name:ident $( < $( $generic:ident ),* > )*;
 		$fn_name:ident;
 		$arg_name:ident : $arg_ty:ty;
 		$input:ident;
@@ -562,11 +629,12 @@ macro_rules! impl_runtime_apis {
 			None => panic!("Bad input data provided to {}", stringify!($fn_name)),
 		};
 
-		let output = $runtime::$fn_name($arg_name);
+		let output = <$runtime as $trait_name $( < $( $generic ),* > )*>::$fn_name($arg_name);
 		$crate::runtime_api::Encode::encode(&output)
 	};
 	(@GENERATE_IMPL_CALL
 		$runtime:ident;
+		$trait_name:ident $( < $( $generic:ident ),* > )*;
 		$fn_name:ident;
 		$( $arg_name:ident : $arg_ty:ty ),*;
 		$input:ident;
@@ -576,7 +644,7 @@ macro_rules! impl_runtime_apis {
 			None => panic!("Bad input data provided to {}", stringify!($fn_name)),
 		};
 
-		let output = $runtime::$fn_name($( $arg_name ),*);
+		let output = <$runtime as $trait_name $( < $( $generic ),* > )*>::$fn_name($( $arg_name ),*);
 		$crate::runtime_api::Encode::encode(&output)
 	};
 }
diff --git a/substrate/core/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.compact.wasm b/substrate/core/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.compact.wasm
index d7e8471570..6f1c85ae97 100644
Binary files a/substrate/core/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.compact.wasm and b/substrate/core/test-runtime/wasm/target/wasm32-unknown-unknown/release/substrate_test_runtime.compact.wasm differ
diff --git a/substrate/node/runtime/wasm/target/wasm32-unknown-unknown/release/node_runtime.compact.wasm b/substrate/node/runtime/wasm/target/wasm32-unknown-unknown/release/node_runtime.compact.wasm
index 9789295b32..ef9eb5aba3 100644
Binary files a/substrate/node/runtime/wasm/target/wasm32-unknown-unknown/release/node_runtime.compact.wasm and b/substrate/node/runtime/wasm/target/wasm32-unknown-unknown/release/node_runtime.compact.wasm differ