diff --git a/src/main/java/club/ttg/dnd5/domain/book/model/Source.java b/src/main/java/club/ttg/dnd5/domain/book/model/Source.java
index dfdd0566..e82cf35e 100644
--- a/src/main/java/club/ttg/dnd5/domain/book/model/Source.java
+++ b/src/main/java/club/ttg/dnd5/domain/book/model/Source.java
@@ -15,11 +15,13 @@
 )
 public class Source extends Timestamped {
     @Id
-    @GeneratedValue(strategy = GenerationType.AUTO)
+    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "sources_id_seq")
+    @SequenceGenerator(name = "sources_id_seq", sequenceName = "sources_id_seq", allocationSize = 1)
     private Long id;
+
     private int page;
 
-    @ManyToOne(fetch = FetchType.LAZY)
+    @ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.MERGE)
     @JoinColumn(name = "book_info_id", referencedColumnName = "sourceAcronym")
     private Book bookInfo; //null -> userId made book by userId
     private String userId;
diff --git a/src/main/java/club/ttg/dnd5/domain/species/model/CreatureProperties.java b/src/main/java/club/ttg/dnd5/domain/species/model/CreatureProperties.java
index 6353b130..dbbefd87 100644
--- a/src/main/java/club/ttg/dnd5/domain/species/model/CreatureProperties.java
+++ b/src/main/java/club/ttg/dnd5/domain/species/model/CreatureProperties.java
@@ -13,11 +13,14 @@
 @Setter
 @MappedSuperclass
 public abstract class CreatureProperties extends NamedEntity {
-
     /** Тип существа */
     @Enumerated(EnumType.STRING)
     private BeastType type;
 
+    /** Размеры */
+    @Embedded
+    private SpeciesSize size;
+
     /** Скорость пешком */
     @Column(columnDefinition = "int default 30")
     private int speed = 30;
diff --git a/src/main/java/club/ttg/dnd5/domain/species/model/Species.java b/src/main/java/club/ttg/dnd5/domain/species/model/Species.java
index c2cc9714..d20e58b1 100644
--- a/src/main/java/club/ttg/dnd5/domain/species/model/Species.java
+++ b/src/main/java/club/ttg/dnd5/domain/species/model/Species.java
@@ -26,9 +26,6 @@
         }
 )
 public class Species extends CreatureProperties implements HasSourceEntity {
-    /** Размеры */
-    @Embedded
-    private SpeciesSize size;
 
     /** Умения */
     @OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
diff --git a/src/main/java/club/ttg/dnd5/domain/species/rest/mapper/SpeciesMapper.java b/src/main/java/club/ttg/dnd5/domain/species/rest/mapper/SpeciesMapper.java
index 2949887f..e310b704 100644
--- a/src/main/java/club/ttg/dnd5/domain/species/rest/mapper/SpeciesMapper.java
+++ b/src/main/java/club/ttg/dnd5/domain/species/rest/mapper/SpeciesMapper.java
@@ -40,6 +40,7 @@ public interface SpeciesMapper {
     @Mapping(source = "properties.movementAttributes.fly", target = "fly")
     @Mapping(source = "properties.movementAttributes.climb", target = "climb")
     @Mapping(source = "properties.movementAttributes.swim", target = "swim")
+    @Mapping(source = "properties.darkVision", target = "darkVision")
     @Mapping(source = "name.alternative", target = "alternative", qualifiedByName = "collectToString")
     Species toEntity(SpeciesRequest request);