diff --git a/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/Certification.kt b/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/Certification.kt
index 35f14c08..45bb32a3 100644
--- a/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/Certification.kt
+++ b/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/Certification.kt
@@ -49,16 +49,9 @@ data class Certification(
             this(issuer, target, targetUserId, creationTime, null, true, 120, Depth.limited(0), RegexSet.wildcard())
 
     override fun toString(): String {
-        val relation = if (userId != null) {
-            "certifies"
-        } else {
-            "delegates to"
-        }
-        val relationTarget = if (userId != null) {
-            "[$userId] ${target.fingerprint}"
-        } else {
-            "$target"
-        }
-        return "$issuer $relation $relationTarget"
+        return if (userId != null)
+            "$issuer certifies [$userId] ${target.fingerprint}"
+        else
+            "$issuer delegates to ${target.fingerprint}"
     }
 }
\ No newline at end of file
diff --git a/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/CertificationSet.kt b/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/CertificationSet.kt
index 9139fc83..e31f138d 100644
--- a/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/CertificationSet.kt
+++ b/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/CertificationSet.kt
@@ -39,7 +39,7 @@ data class CertificationSet(
          * @param certification certification
          */
         @JvmStatic
-        fun fromCertification(certification: Certification) : CertificationSet {
+        fun fromCertification(certification: Certification): CertificationSet {
             val set = empty(certification.issuer, certification.target)
             set.add(certification)
             return set
@@ -72,7 +72,7 @@ data class CertificationSet(
      *
      * @param certification [Certification] with the same issuer fingerprint and target fingerprint as this object.
      */
-    fun add(certification : Certification) {
+    fun add(certification: Certification) {
         require(issuer.fingerprint == certification.issuer.fingerprint) { "Issuer fingerprint mismatch." }
         require(target.fingerprint == certification.target.fingerprint) { "Target fingerprint mismatch." }
 
@@ -85,6 +85,6 @@ data class CertificationSet(
     }
 
     override fun toString(): String {
-        return "$certifications"
+        return certifications.map { it.value }.flatten().joinToString("\n")
     }
 }
\ No newline at end of file