diff --git a/src/main/kotlin/fr/postgresjson/connexion/Function.kt b/src/main/kotlin/fr/postgresjson/connexion/Function.kt
index e7c17f1..ed69eca 100644
--- a/src/main/kotlin/fr/postgresjson/connexion/Function.kt
+++ b/src/main/kotlin/fr/postgresjson/connexion/Function.kt
@@ -32,6 +32,12 @@ class Function(val definition: Function, override val connection: Connection): E
     ): R? =
         select(object: TypeReference<R>() {}, values, block)
 
+    inline fun <reified R: EntityI<*>> selectOne(
+        value: R,
+        noinline block: SelectOneCallback<R> = {}
+    ): R? =
+        select(object: TypeReference<R>() {}, listOf(value), block)
+
     /**
      * Select One entity with named parameters
      */