diff --git a/lib/modules/coverage/contract_source.js b/lib/modules/coverage/contract_source.js
index 8e8a231a..680d88f8 100644
--- a/lib/modules/coverage/contract_source.js
+++ b/lib/modules/coverage/contract_source.js
@@ -167,13 +167,13 @@ class ContractSource {
 
           let trueExpression = (node.trueBody && node.trueBody.statements && node.trueBody.statements[0]) || node.trueBody;
           if(trueExpression) {
-            children = children.concat([].concat(trueExpression));
+            children = children.concat(trueExpression);
             trueExpression._parent = {type: 'b', id: node.id, idx: 0};
           }
 
           let falseExpression = (node.falseBody && node.falseBody.statements && node.falseBody.statements[0]) || node.falseBody;
           if(falseExpression) {
-            children = children.concat([].concat(falseExpression));
+            children = children.concat(falseExpression);
             falseExpression._parent = {type: 'b', id: node.id, idx: 1};
           }