diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/FirElement.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/FirElement.kt
index dd2bacce312..555bd887d1e 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/FirElement.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/FirElement.kt
@@ -14,6 +14,7 @@ import org.jetbrains.kotlin.fir.visitors.FirVisitorVoid
 interface FirElement {
     val psi: PsiElement?
 
+    @Deprecated("It's generally better to obtain use-site session from external source")
     val session: FirSession
 
     fun <R, D> accept(visitor: FirVisitor<R, D>, data: D): R =