diff --git a/java/openapi/src/com/intellij/psi/util/TypeConversionUtil.java b/java/openapi/src/com/intellij/psi/util/TypeConversionUtil.java
index 7c8cf30753bd..30e3ba6b6d3b 100644
--- a/java/openapi/src/com/intellij/psi/util/TypeConversionUtil.java
+++ b/java/openapi/src/com/intellij/psi/util/TypeConversionUtil.java
@@ -672,6 +672,7 @@ public class TypeConversionUtil {
 
     if (left instanceof PsiArrayType) return false;
     if (right instanceof PsiPrimitiveType) {
+      if (isVoidType(right)) return false;
       if (!(left instanceof PsiPrimitiveType)) {
         return left instanceof PsiClassType && isBoxable((PsiClassType)left, (PsiPrimitiveType)right);
       }