diff --git a/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/AuthorizationGrantType.java b/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/AuthorizationGrantType.java
index e1321bd759..433811a781 100644
--- a/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/AuthorizationGrantType.java
+++ b/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/AuthorizationGrantType.java
@@ -111,4 +111,9 @@ public final class AuthorizationGrantType implements Serializable {
 		return this.getValue().hashCode();
 	}
 
+	@Override
+	public String toString() {
+		return "AuthorizationGrantType{" + "value='" + this.value + '\'' + '}';
+	}
+
 }