diff --git a/Test/TestParser.hs b/Test/TestParser.hs
index 8e8db60..090fac1 100644
--- a/Test/TestParser.hs
+++ b/Test/TestParser.hs
@@ -139,16 +139,16 @@ testExpressionOr = TestCase $
     assertEqual "expect or expression" (BinaryOperation Or (Reference "bar") (Reference "baz")) $
     parseExpression [IDENTIFIER "bar",OR,IDENTIFIER "baz"]
 testExpressionPostIncrement = TestCase $
-    assertEqual "expect PostIncrement" (UnaryOperation PostIncrement (Reference "a")) $
+    assertEqual "expect PostIncrement" (StatementExpressionExpression $ PostIncrement (Reference "a")) $
     parseExpression [IDENTIFIER "a",INCREMENT]
 testExpressionPostDecrement = TestCase $
-    assertEqual "expect PostDecrement" (UnaryOperation PostDecrement (Reference "a")) $
+    assertEqual "expect PostDecrement" (StatementExpressionExpression $ PostDecrement (Reference "a")) $
     parseExpression [IDENTIFIER "a",DECREMENT]
 testExpressionPreIncrement = TestCase $
-    assertEqual "expect PreIncrement" (UnaryOperation PreIncrement (Reference "a")) $
+    assertEqual "expect PreIncrement" (StatementExpressionExpression $ PreIncrement (Reference "a")) $
     parseExpression [INCREMENT,IDENTIFIER "a"]
 testExpressionPreDecrement = TestCase $
-    assertEqual "expect PreIncrement" (UnaryOperation PreDecrement (Reference "a")) $
+    assertEqual "expect PreIncrement" (StatementExpressionExpression $ PreDecrement (Reference "a")) $
     parseExpression [DECREMENT,IDENTIFIER "a"]
 testExpressionAssign = TestCase $
     assertEqual "expect assign 5 to a" (StatementExpressionExpression (Assignment (Reference "a") (IntegerLiteral 5))) $
diff --git a/src/Parser/JavaParser.y b/src/Parser/JavaParser.y
index 45206a5..21d7be1 100644
--- a/src/Parser/JavaParser.y
+++ b/src/Parser/JavaParser.y
@@ -279,13 +279,13 @@ assignmentoperator : ASSIGN { Nothing }
                  | XOREQUAL { Just BitwiseXor }
                  | OREQUAL{ Just BitwiseOr }
 
-preincrementexpression : INCREMENT unaryexpression { UnaryOperation PreIncrement $2 }
+preincrementexpression : INCREMENT unaryexpression { PreIncrement $2 }
 
-predecrementexpression : DECREMENT unaryexpression { UnaryOperation PreDecrement $2 }
+predecrementexpression : DECREMENT unaryexpression { PreDecrement $2 }
 
-postincrementexpression : postfixexpression INCREMENT { UnaryOperation PostIncrement $1 }
+postincrementexpression : postfixexpression INCREMENT { PostIncrement $1 }
 
-postdecrementexpression : postfixexpression DECREMENT { UnaryOperation PostDecrement $1 }
+postdecrementexpression : postfixexpression DECREMENT { PostDecrement $1 }
 
 methodinvocation : simplename LBRACE   RBRACE  { MethodCall (Reference "this") $1 []  }
                  | simplename LBRACE argumentlist RBRACE { MethodCall (Reference "this") $1 $3 }
@@ -300,15 +300,15 @@ conditionalandexpression : inclusiveorexpression { $1 }
 fieldaccess      : primary  DOT IDENTIFIER { }
 
 unaryexpression         : unaryexpressionnotplusminus { $1 }
-                 | predecrementexpression { $1 }
+                 | predecrementexpression { StatementExpressionExpression $1 }
                  | PLUS unaryexpression { $2 }
                  | MINUS unaryexpression { UnaryOperation Minus $2 }
-                 | preincrementexpression { $1 }
+                 | preincrementexpression { StatementExpressionExpression $1 }
 
 postfixexpression : primary { $1 }
                  | name { $1 }
-                 | postincrementexpression { $1 }
-                 | postdecrementexpression{ $1 }
+                 | postincrementexpression { StatementExpressionExpression $1 }
+                 | postdecrementexpression { StatementExpressionExpression $1 }
 
 primary                 : primarynonewarray { $1 }