diff --git a/querydsl-jpa/src/main/java/com/mysema/query/jpa/JPQLSerializer.java b/querydsl-jpa/src/main/java/com/mysema/query/jpa/JPQLSerializer.java
index 5230a532c..affc2609f 100644
--- a/querydsl-jpa/src/main/java/com/mysema/query/jpa/JPQLSerializer.java
+++ b/querydsl-jpa/src/main/java/com/mysema/query/jpa/JPQLSerializer.java
@@ -13,12 +13,13 @@
  */
 package com.mysema.query.jpa;
 
+import java.util.*;
+
 import javax.annotation.Nullable;
 import javax.persistence.*;
 import javax.persistence.metamodel.EntityType;
 import javax.persistence.metamodel.Metamodel;
 import javax.persistence.metamodel.SingularAttribute;
-import java.util.*;
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
@@ -282,7 +283,20 @@ public class JPQLSerializer extends SerializerBase<JPQLSerializer> {
     @Override
     public void visitConstant(Object constant) {
         if (inCaseOperation && templates.isCaseWithLiterals()) {
-            visitLiteral(constant);
+            if (constant instanceof Collection) {
+                append("(");
+                boolean first = true;
+                for (Object o : (Collection)constant) {
+                    if (!first) {
+                        append(", ");
+                    }
+                    visitLiteral(o);
+                    first = false;
+                }
+                append(")");
+            } else {
+                visitLiteral(constant);
+            }
         } else {
             boolean wrap = templates.wrapConstant(constant);
             if (wrap) {
diff --git a/querydsl-jpa/src/test/java/com/mysema/query/AbstractJPATest.java b/querydsl-jpa/src/test/java/com/mysema/query/AbstractJPATest.java
index fe1780e09..97688e9fd 100644
--- a/querydsl-jpa/src/test/java/com/mysema/query/AbstractJPATest.java
+++ b/querydsl-jpa/src/test/java/com/mysema/query/AbstractJPATest.java
@@ -13,15 +13,19 @@
  */
 package com.mysema.query;
 
-import java.io.*;
+import static org.junit.Assert.*;
+import static com.mysema.query.Target.*;
+
 import java.math.BigDecimal;
 import java.math.BigInteger;
 import java.util.*;
 import java.util.Calendar;
 import java.util.Map.Entry;
 
-import antlr.RecognitionException;
-import antlr.TokenStreamException;
+import org.junit.Before;
+import org.junit.Ignore;
+import org.junit.Test;
+
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
 import com.mysema.commons.lang.Pair;
@@ -42,11 +46,9 @@ import com.mysema.query.types.expr.*;
 import com.mysema.query.types.path.*;
 import com.mysema.query.types.template.NumberTemplate;
 import com.mysema.testutil.ExcludeIn;
-import org.junit.Before;
-import org.junit.Ignore;
-import org.junit.Test;
-import static com.mysema.query.Target.*;
-import static org.junit.Assert.*;
+
+import antlr.RecognitionException;
+import antlr.TokenStreamException;
 
 /**
  * @author tiwe
@@ -313,6 +315,14 @@ public abstract class AbstractJPATest {
                     .otherwise(4));
     }
 
+    @Test
+    public void Case3() {
+        query().from(cat)
+            .list(Expressions.cases()
+                    .when(cat.toes.in(2, 3)).then(cat.id.multiply(cat.toes))
+                    .otherwise(4));
+    }
+
     @Test
     public void Cast() {
         List<Cat> cats = query().from(cat).list(cat);