diff --git a/lib/build.gradle.kts b/lib/build.gradle.kts
index 758293f..056b963 100644
--- a/lib/build.gradle.kts
+++ b/lib/build.gradle.kts
@@ -2,6 +2,7 @@ plugins {
     `java-library`
     `maven-publish`
     signing
+    jacoco
     id("org.sonarqube") version "3.5.0.2730"
 }
 
@@ -19,6 +20,13 @@ java {
     }
 }
 
+tasks.jacocoTestReport {
+    reports {
+        xml.required.set(true)
+        html.required.set(true)
+    }
+}
+
 sonarqube {
     properties {
         property("sonar.projectName", rootProject.name)
diff --git a/lib/src/main/java/com/uwyn/urlencoder/UrlEncoder.java b/lib/src/main/java/com/uwyn/urlencoder/UrlEncoder.java
index d7b7f7b..7adee18 100644
--- a/lib/src/main/java/com/uwyn/urlencoder/UrlEncoder.java
+++ b/lib/src/main/java/com/uwyn/urlencoder/UrlEncoder.java
@@ -32,10 +32,6 @@ public abstract class UrlEncoder {
         UNRESERVED_URI_CHARS = unreserved;
     }
 
-    private UrlEncoder() {
-        throw new IllegalStateException("UrlEncoder shouldn't be instantiated");
-    }
-
     private static void appendUrlEncodedByte(StringBuilder out, int ch) {
         out.append("%");
         appendUrlEncodedDigit(out, ch >> 4);