diff --git a/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/RuntimeMetadata.kt b/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/RuntimeMetadata.kt
index af65336e..c1283a8d 100644
--- a/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/RuntimeMetadata.kt
+++ b/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/RuntimeMetadata.kt
@@ -12,7 +12,7 @@ interface WithName {
 fun <T : WithName> List<T>.groupByName() = associateBy(WithName::name).toMap()
 
 class RuntimeMetadata(
-    val runtimeVersion: BigInteger,
+    val metadataVersion: Int,
     val modules: Map<String, Module>,
     val extrinsic: ExtrinsicMetadata
 )
diff --git a/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/builder/PostV14RuntimeBuilder.kt b/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/builder/PostV14RuntimeBuilder.kt
index d27c2a89..9aa33e86 100644
--- a/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/builder/PostV14RuntimeBuilder.kt
+++ b/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/builder/PostV14RuntimeBuilder.kt
@@ -53,7 +53,7 @@ object PostV14RuntimeBuilder : RuntimeBuilder {
                 typeRegistry
             ),
             modules = buildModules(metadataStruct[schema.pallets], typeRegistry),
-            runtimeVersion = reader.metadataVersion.toBigInteger()
+            metadataVersion = reader.metadataVersion
         )
     }
 
diff --git a/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/builder/V13RuntimeBuilder.kt b/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/builder/V13RuntimeBuilder.kt
index 663067eb..bc826ae9 100644
--- a/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/builder/V13RuntimeBuilder.kt
+++ b/substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/builder/V13RuntimeBuilder.kt
@@ -48,7 +48,7 @@ internal object V13RuntimeBuilder : RuntimeBuilder {
                 knownSignedExtensions = knownSignedExtensions
             ),
             modules = buildModules(metadataStruct[RuntimeMetadataSchema.modules], typeRegistry),
-            runtimeVersion = reader.metadataVersion.toBigInteger()
+            metadataVersion = reader.metadataVersion
         )
     }