diff --git a/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthDataSourceImpl.kt b/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthDataSourceImpl.kt
index 3f6f367..720c9e1 100644
--- a/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthDataSourceImpl.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthDataSourceImpl.kt
@@ -5,16 +5,14 @@ import gq.kirmanak.mealient.data.auth.AuthService
 import gq.kirmanak.mealient.data.auth.impl.AuthenticationError.*
 import gq.kirmanak.mealient.data.impl.ErrorDetail
 import gq.kirmanak.mealient.data.impl.RetrofitBuilder
+import gq.kirmanak.mealient.data.impl.util.decodeErrorBodyOrNull
 import kotlinx.coroutines.CancellationException
 import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.SerializationException
 import kotlinx.serialization.json.Json
-import kotlinx.serialization.json.decodeFromStream
 import retrofit2.HttpException
-import retrofit2.Response
 import retrofit2.create
 import timber.log.Timber
-import java.io.InputStream
 import javax.inject.Inject
 
 @ExperimentalSerializationApi
@@ -22,6 +20,7 @@ class AuthDataSourceImpl @Inject constructor(
     private val retrofitBuilder: RetrofitBuilder,
     private val json: Json,
 ) : AuthDataSource {
+
     override suspend fun authenticate(
         username: String,
         password: String,
@@ -54,12 +53,4 @@ class AuthDataSourceImpl @Inject constructor(
         Timber.v("authenticate() returned: $accessToken")
         return accessToken
     }
-
-    private inline fun <reified T, reified R> Response<T>.decodeErrorBodyOrNull(): R? =
-        errorBody()?.byteStream()?.let { json.decodeFromStreamOrNull<R>(it) }
-
-    private inline fun <reified T> Json.decodeFromStreamOrNull(stream: InputStream): T? =
-        runCatching { decodeFromStream<T>(stream) }
-            .onFailure { Timber.e(it, "decodeFromStreamOrNull: can't decode") }
-            .getOrNull()
 }
\ No newline at end of file
diff --git a/app/src/main/java/gq/kirmanak/mealient/data/impl/util/NetworkExtensions.kt b/app/src/main/java/gq/kirmanak/mealient/data/impl/util/NetworkExtensions.kt
new file mode 100644
index 0000000..bd276e3
--- /dev/null
+++ b/app/src/main/java/gq/kirmanak/mealient/data/impl/util/NetworkExtensions.kt
@@ -0,0 +1,19 @@
+package gq.kirmanak.mealient.data.impl.util
+
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.decodeFromStream
+import retrofit2.Response
+import timber.log.Timber
+import java.io.InputStream
+
+@ExperimentalSerializationApi
+inline fun <T, reified R> Response<T>.decodeErrorBodyOrNull(json: Json): R? =
+    errorBody()?.byteStream()?.let { json.decodeFromStreamOrNull<R>(it) }
+
+@ExperimentalSerializationApi
+inline fun <reified T> Json.decodeFromStreamOrNull(stream: InputStream): T? =
+    runCatching { decodeFromStream<T>(stream) }
+        .onFailure { Timber.e(it, "decodeFromStreamOrNull: can't decode") }
+        .getOrNull()
+