diff --git a/src/main/java/no/ndla/taxonomy/util/PrettyUrlUtil.java b/src/main/java/no/ndla/taxonomy/util/PrettyUrlUtil.java
index 2fa8fb2a..102478d2 100644
--- a/src/main/java/no/ndla/taxonomy/util/PrettyUrlUtil.java
+++ b/src/main/java/no/ndla/taxonomy/util/PrettyUrlUtil.java
@@ -33,7 +33,7 @@ public static Optional<String> createPrettyUrl(
         rootName.ifPresent(rn -> {
             if (!rn.equals(name)) {
                 buildUrlFragment(builder, cleanString(rootName.get()));
-                builder.append("_");
+                builder.append("/");
             }
         });
         buildUrlFragment(builder, cleanString(name));
diff --git a/src/test/java/no/ndla/taxonomy/util/PrettyUrlUtilTest.java b/src/test/java/no/ndla/taxonomy/util/PrettyUrlUtilTest.java
index 924736a7..8ebceb6e 100644
--- a/src/test/java/no/ndla/taxonomy/util/PrettyUrlUtilTest.java
+++ b/src/test/java/no/ndla/taxonomy/util/PrettyUrlUtilTest.java
@@ -26,7 +26,7 @@ void test_create_pretty_url() {
     @Test
     void test_create_pretty_url_with_root() {
         assertEquals(
-                "/e/the-root-title_this-is-a-title/hash",
+                "/e/the-root-title/this-is-a-title/hash",
                 PrettyUrlUtil.createPrettyUrl(Optional.of("The root title"), "This is a title", "hash", NodeType.TOPIC)
                         .get());
     }
@@ -60,7 +60,7 @@ void test_create_pretty_url_with_norwegian_chars() {
                                 Optional.empty(), "Når kommer høsten tror du ærlig talt?", "hash", NodeType.TOPIC)
                         .get());
         assertEquals(
-                "/e/utgatt-historie_a-hoppe-etter-wirkola/hash",
+                "/e/utgatt-historie/a-hoppe-etter-wirkola/hash",
                 PrettyUrlUtil.createPrettyUrl(
                                 Optional.of("Utgått historie"), "Å hoppe etter wirkola", "hash", NodeType.TOPIC)
                         .get());