diff --git a/node.go b/node.go
index 94c65f0..13816e8 100644
--- a/node.go
+++ b/node.go
@@ -1275,6 +1275,22 @@ func (this *conversionState) convertNoFreeFloating(n_ node.Node) (string, error)
 
 		return v + "++", nil
 
+	case *expr.UnaryMinus:
+		v, err := this.convert(n.Expr)
+		if err != nil {
+			return "", parseErr{n, err}
+		}
+
+		return "-(" + v + ")", nil
+
+	case *expr.UnaryPlus:
+		v, err := this.convert(n.Expr)
+		if err != nil {
+			return "", parseErr{n, err}
+		}
+
+		return "+(" + v + ")", nil
+
 	case *expr.MethodCall:
 		// Foo->Bar(Baz)
 		parent, err := this.convert(n.Variable)