diff --git a/node.go b/node.go
index 3948e52..4b7920b 100644
--- a/node.go
+++ b/node.go
@@ -1541,7 +1541,7 @@ func (this *conversionState) convertAssignment(n *assign.Assign, isTopLevelState
 			return "", parseErr{dimf, err}
 		}
 
-		ret := arrayVar + ` = append(` + arrayVar + `, ` + rvalue + `)`
+		ret := arrayVar + ` = append(` + arrayVar + `, ` + removeParens(rvalue) + `)`
 		if isTopLevelStatement {
 			ret += "\n"
 		}
@@ -1559,6 +1559,7 @@ func (this *conversionState) convertAssignment(n *assign.Assign, isTopLevelState
 		// TODO this may need to use `:=`
 
 		if isTopLevelStatement {
+			rvalue = removeParens(rvalue) // safe in top-level assignment context
 
 			// If this is a simple expression (func call; indirect/method call; assignment of func/method call) then
 			// we need to propagate errors