diff --git a/acme4j-client/src/main/java/org/shredzone/acme4j/exception/AcmeUserActionRequiredException.java b/acme4j-client/src/main/java/org/shredzone/acme4j/exception/AcmeUserActionRequiredException.java
index 0c43ee86..457e6efd 100644
--- a/acme4j-client/src/main/java/org/shredzone/acme4j/exception/AcmeUserActionRequiredException.java
+++ b/acme4j-client/src/main/java/org/shredzone/acme4j/exception/AcmeUserActionRequiredException.java
@@ -69,4 +69,11 @@ public class AcmeUserActionRequiredException extends AcmeServerException {
         }
     }
 
+    @Override
+    public String toString() {
+        return getProblem().getInstance()
+                .map(uri -> "Please visit " + uri + " - details: " + getProblem())
+                .orElseGet(super::toString);
+    }
+
 }
diff --git a/acme4j-client/src/test/java/org/shredzone/acme4j/exception/AcmeUserActionRequiredExceptionTest.java b/acme4j-client/src/test/java/org/shredzone/acme4j/exception/AcmeUserActionRequiredExceptionTest.java
index ff744c45..81177379 100644
--- a/acme4j-client/src/test/java/org/shredzone/acme4j/exception/AcmeUserActionRequiredExceptionTest.java
+++ b/acme4j-client/src/test/java/org/shredzone/acme4j/exception/AcmeUserActionRequiredExceptionTest.java
@@ -45,6 +45,7 @@ public class AcmeUserActionRequiredExceptionTest {
         assertThat(ex.getMessage()).isEqualTo(detail);
         assertThat(ex.getTermsOfServiceUri().orElseThrow()).isEqualTo(tosUri);
         assertThat(ex.getInstance()).isEqualTo(instanceUrl);
+        assertThat(ex.toString()).isEqualTo("Please visit " + instanceUrl + " - details: " + detail);
     }
 
     /**
@@ -64,6 +65,7 @@ public class AcmeUserActionRequiredExceptionTest {
         assertThat(ex.getMessage()).isEqualTo(detail);
         assertThat(ex.getTermsOfServiceUri()).isEmpty();
         assertThat(ex.getInstance()).isEqualTo(instanceUrl);
+        assertThat(ex.toString()).isEqualTo("Please visit " + instanceUrl + " - details: " + detail);
     }
 
 }