diff --git a/platform/lang-impl/src/com/intellij/util/indexing/diagnostic/dto/JsonFileProviderIndexStatistics.kt b/platform/lang-impl/src/com/intellij/util/indexing/diagnostic/dto/JsonFileProviderIndexStatistics.kt
index 4c083ee1fc5b..f0ada8fa7cdb 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/diagnostic/dto/JsonFileProviderIndexStatistics.kt
+++ b/platform/lang-impl/src/com/intellij/util/indexing/diagnostic/dto/JsonFileProviderIndexStatistics.kt
@@ -1,6 +1,9 @@
 // Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.util.indexing.diagnostic.dto
 
+import com.fasterxml.jackson.annotation.JsonInclude
+
+@JsonInclude(JsonInclude.Include.NON_NULL)
 data class JsonFileProviderIndexStatistics(
   val providerName: String,
   val totalNumberOfFiles: Int,
diff --git a/platform/lang-impl/src/com/intellij/util/indexing/diagnostic/dto/JsonProjectIndexingHistory.kt b/platform/lang-impl/src/com/intellij/util/indexing/diagnostic/dto/JsonProjectIndexingHistory.kt
index 8de301f2f2ed..90df3f9fc4b7 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/diagnostic/dto/JsonProjectIndexingHistory.kt
+++ b/platform/lang-impl/src/com/intellij/util/indexing/diagnostic/dto/JsonProjectIndexingHistory.kt
@@ -1,6 +1,9 @@
 // Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.util.indexing.diagnostic.dto
 
+import com.fasterxml.jackson.annotation.JsonInclude
+
+@JsonInclude(JsonInclude.Include.NON_NULL)
 data class JsonProjectIndexingHistory(
   val projectName: String,
   val numberOfFileProviders: Int,