diff --git a/plugins/yaml/src/org/jetbrains/yaml/meta/impl/YamlDocumentationProviderBase.java b/plugins/yaml/src/org/jetbrains/yaml/meta/impl/YamlDocumentationProviderBase.java
index 64cbaca1ad77..801eaf13c068 100644
--- a/plugins/yaml/src/org/jetbrains/yaml/meta/impl/YamlDocumentationProviderBase.java
+++ b/plugins/yaml/src/org/jetbrains/yaml/meta/impl/YamlDocumentationProviderBase.java
@@ -24,6 +24,8 @@ import org.jetbrains.yaml.psi.YAMLMapping;
 import org.jetbrains.yaml.psi.YAMLPsiElement;
 import org.jetbrains.yaml.psi.YAMLValue;
 
+import java.util.Objects;
+
 @ApiStatus.Experimental
 public abstract class YamlDocumentationProviderBase extends AbstractDocumentationProvider {
   @Override
@@ -221,5 +223,21 @@ public abstract class YamlDocumentationProviderBase extends AbstractDocumentatio
     public String getDocumentation() {
       return YamlDocumentationProviderBase.this.getDocumentation(myProject, myType, myField);
     }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) return true;
+      if (o == null || getClass() != o.getClass()) return false;
+      DocumentationElement element = (DocumentationElement)o;
+      return Objects.equals(myProject, element.myProject) &&
+             Objects.equals(myType, element.myType) &&
+             Objects.equals(myField, element.myField);
+    }
+
+    @Override
+    public int hashCode() {
+
+      return Objects.hash(myProject, myType, myField);
+    }
   }
 }