diff --git a/acme4j-client/src/main/java/org/shredzone/acme4j/exception/AcmeServerException.java b/acme4j-client/src/main/java/org/shredzone/acme4j/exception/AcmeServerException.java
index 3adc4f14..7c0010eb 100644
--- a/acme4j-client/src/main/java/org/shredzone/acme4j/exception/AcmeServerException.java
+++ b/acme4j-client/src/main/java/org/shredzone/acme4j/exception/AcmeServerException.java
@@ -15,8 +15,6 @@ package org.shredzone.acme4j.exception;
 
 import java.util.Objects;
 
-import org.shredzone.acme4j.util.AcmeUtils;
-
 /**
  * An exception that is thrown when the ACME server returned an error. It contains
  * further details of the cause.
@@ -47,15 +45,4 @@ public class AcmeServerException extends AcmeException {
         return type;
     }
 
-    /**
-     * Returns the ACME error type. This is the last part of the type URN, e.g.
-     * {@code "malformed"} on {@code "urn:ietf:params:acme:error:malformed"}.
-     *
-     * @return ACME error type, or {@code null} if this is not an
-     *         {@code "urn:ietf:params:acme:error"}
-     */
-    public String getAcmeErrorType() {
-        return AcmeUtils.stripErrorPrefix(type);
-    }
-
 }
diff --git a/acme4j-client/src/test/java/org/shredzone/acme4j/connector/DefaultConnectionTest.java b/acme4j-client/src/test/java/org/shredzone/acme4j/connector/DefaultConnectionTest.java
index 01fbdbea..fd2a8ed2 100644
--- a/acme4j-client/src/test/java/org/shredzone/acme4j/connector/DefaultConnectionTest.java
+++ b/acme4j-client/src/test/java/org/shredzone/acme4j/connector/DefaultConnectionTest.java
@@ -433,7 +433,6 @@ public class DefaultConnectionTest {
         } catch (AcmeServerException ex) {
             assertThat(ex.getType(), is("urn:ietf:params:acme:error:unauthorized"));
             assertThat(ex.getMessage(), is("Invalid response: 404"));
-            assertThat(ex.getAcmeErrorType(), is("unauthorized"));
         } catch (AcmeException ex) {
             fail("Expected an AcmeServerException");
         }
@@ -469,7 +468,6 @@ public class DefaultConnectionTest {
         } catch (AcmeServerException ex) {
             assertThat(ex.getType(), is("urn:zombie:error:apocalypse"));
             assertThat(ex.getMessage(), is("Zombie apocalypse in progress"));
-            assertThat(ex.getAcmeErrorType(), is(nullValue()));
         } catch (AcmeException ex) {
             fail("Expected an AcmeServerException");
         }