diff --git a/runtime/g1/src/lib.rs b/runtime/g1/src/lib.rs
index e77e56543e3044439c7df3005bfc06992d1d0b5e..6c64ed3ecc57782e04465e09c87a45a86aac3467 100644
--- a/runtime/g1/src/lib.rs
+++ b/runtime/g1/src/lib.rs
@@ -77,7 +77,7 @@ common_runtime::declare_session_keys! {}
 #[sp_version::runtime_version]
 pub const VERSION: RuntimeVersion = RuntimeVersion {
     spec_name: create_runtime_str!("g1"),
-    impl_name: create_runtime_str!("g1"),
+    impl_name: create_runtime_str!("duniter-g1"),
     authoring_version: 1,
     // The version of the runtime specification. A full node will not attempt to use its native
     //   runtime in substitute for the on-chain Wasm runtime unless all of `spec_name`,
diff --git a/runtime/gdev/src/lib.rs b/runtime/gdev/src/lib.rs
index d46ecfdec0e6e84266d2e7a51a5159817e3e4518..f062f16ddfda83a63984364d2f5a6cb1b931f52b 100644
--- a/runtime/gdev/src/lib.rs
+++ b/runtime/gdev/src/lib.rs
@@ -78,7 +78,7 @@ common_runtime::declare_session_keys! {}
 #[sp_version::runtime_version]
 pub const VERSION: RuntimeVersion = RuntimeVersion {
     spec_name: create_runtime_str!("gdev"),
-    impl_name: create_runtime_str!("gdev"),
+    impl_name: create_runtime_str!("duniter-gdev"),
     authoring_version: 1,
     // The version of the runtime specification. A full node will not attempt to use its native
     //   runtime in substitute for the on-chain Wasm runtime unless all of `spec_name`,
diff --git a/runtime/gtest/src/lib.rs b/runtime/gtest/src/lib.rs
index 51ba57f7e8d269661dbf2d656e586e6a67e4f390..f72dc9c19f2ed3d5a688db856764a3a356a3469d 100644
--- a/runtime/gtest/src/lib.rs
+++ b/runtime/gtest/src/lib.rs
@@ -76,8 +76,8 @@ common_runtime::declare_session_keys! {}
 //   https://substrate.dev/docs/en/knowledgebase/runtime/upgrades#runtime-versioning
 #[sp_version::runtime_version]
 pub const VERSION: RuntimeVersion = RuntimeVersion {
-    spec_name: create_runtime_str!("gdem"),
-    impl_name: create_runtime_str!("gdem"),
+    spec_name: create_runtime_str!("gtest"),
+    impl_name: create_runtime_str!("duniter-gtest"),
     authoring_version: 1,
     // The version of the runtime specification. A full node will not attempt to use its native
     //   runtime in substitute for the on-chain Wasm runtime unless all of `spec_name`,