diff --git a/dokka-subprojects/core/src/main/kotlin/org/jetbrains/dokka/DokkaGenerator.kt b/dokka-subprojects/core/src/main/kotlin/org/jetbrains/dokka/DokkaGenerator.kt
index 29b9dfaba3..b5be5d7bf2 100644
--- a/dokka-subprojects/core/src/main/kotlin/org/jetbrains/dokka/DokkaGenerator.kt
+++ b/dokka-subprojects/core/src/main/kotlin/org/jetbrains/dokka/DokkaGenerator.kt
@@ -21,6 +21,9 @@ public class DokkaGenerator(
     private val configuration: DokkaConfiguration,
     private val logger: DokkaLogger
 ) {
+    init {
+        DisplaySourceSetCaches.clear()
+    }
 
     public fun generate() {
         timed(logger) {