diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/data/pullrequest/GHPullRequest.kt b/plugins/github/src/org/jetbrains/plugins/github/api/data/pullrequest/GHPullRequest.kt
index dd3cbe45b141..f7fa856e2b0a 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/data/pullrequest/GHPullRequest.kt
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/data/pullrequest/GHPullRequest.kt
@@ -39,7 +39,7 @@ class GHPullRequest(id: String,
                     val headRefOid: String,
                     val headRepository: GHRepository?,
                     override val reactions: GHReactable.ReactionConnection)
-  : GHPullRequestShort(id, url, number, title, state, isDraft, author, createdAt, updatedAt, isReadByViewer,
+  : GHPullRequestShort(id, url, number, title, state, isDraft, author, createdAt, updatedAt,
                        assignees, labels, reviewRequests, reviewThreads,
                        reviews, mergeable, viewerCanUpdate, viewerCanReact, viewerDidAuthor, reactions) {
 
diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/data/pullrequest/GHPullRequestShort.kt b/plugins/github/src/org/jetbrains/plugins/github/api/data/pullrequest/GHPullRequestShort.kt
index 4977bfc6af9e..5dd2d25482c2 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/data/pullrequest/GHPullRequestShort.kt
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/data/pullrequest/GHPullRequestShort.kt
@@ -20,7 +20,6 @@ open class GHPullRequestShort(id: String,
                               val author: GHActor?,
                               val createdAt: Date,
                               val updatedAt: Date,
-                              val isReadByViewer: Boolean,
                               @JsonProperty("assignees") assignees: GraphQLNodesDTO<GHUser>,
                               @JsonProperty("labels") labels: GraphQLNodesDTO<GHLabel>,
                               @JsonProperty("reviewRequests") reviewRequests: GraphQLNodesDTO<GHPullRequestReviewRequest>,
@@ -66,7 +65,6 @@ open class GHPullRequestShort(id: String,
     if (author != other.author) return false
     if (createdAt != other.createdAt) return false
     if (updatedAt != other.updatedAt) return false
-    if (isReadByViewer != other.isReadByViewer) return false
     if (mergeable != other.mergeable) return false
     if (viewerCanUpdate != other.viewerCanUpdate) return false
     if (viewerDidAuthor != other.viewerDidAuthor) return false
@@ -90,7 +88,6 @@ open class GHPullRequestShort(id: String,
     result = 31 * result + (author?.hashCode() ?: 0)
     result = 31 * result + createdAt.hashCode()
     result = 31 * result + updatedAt.hashCode()
-    result = 31 * result + isReadByViewer.hashCode()
     result = 31 * result + mergeable.hashCode()
     result = 31 * result + viewerCanUpdate.hashCode()
     result = 31 * result + viewerDidAuthor.hashCode()
diff --git a/plugins/github/src/org/jetbrains/plugins/github/pullrequest/data/service/GHPRPersistentInteractionState.kt b/plugins/github/src/org/jetbrains/plugins/github/pullrequest/data/service/GHPRPersistentInteractionState.kt
index 9fad2fef4b8f..470b0d22afb7 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/pullrequest/data/service/GHPRPersistentInteractionState.kt
+++ b/plugins/github/src/org/jetbrains/plugins/github/pullrequest/data/service/GHPRPersistentInteractionState.kt
@@ -27,7 +27,7 @@ class GHPRPersistentInteractionState : SerializablePersistentStateComponent<GHPR
 
   fun isSeen(pr: GHPullRequestShort): Boolean {
     val lastSeen = state.prStates.find { it.id == pr.prId }?.lastSeen
-    val isSeen = (lastSeen != null && Date(lastSeen) >= pr.updatedAt) || pr.isReadByViewer
+    val isSeen = (lastSeen != null && Date(lastSeen) >= pr.updatedAt)
 
     // TODO: Revise this check when adding a new-in-timeline line.
     // Cleanup state entries for PRs that have updates