diff --git a/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/DeclarationsConverter.kt b/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/DeclarationsConverter.kt
index 2ff6c5d4a9a..6e13e984597 100644
--- a/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/DeclarationsConverter.kt
+++ b/compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/DeclarationsConverter.kt
@@ -726,7 +726,7 @@ class DeclarationsConverter(
             source = anonymousInitializer.toFirSourceElement()
             session = baseSession
             origin = FirDeclarationOrigin.Source
-            body = if (stubMode) buildEmptyExpressionBlock() else firBlock
+            body = if (stubMode) buildEmptyExpressionBlock() else firBlock ?: buildEmptyExpressionBlock()
         }
     }