diff --git a/src/vs/workbench/parts/files/browser/views/explorerViewer.ts b/src/vs/workbench/parts/files/browser/views/explorerViewer.ts
index 2e2de7ba74752ced2f0b1e3aa5c4cd363c6a41ed..17677e0cf7f71dd3778d0657af80fa0b0a5e4c21 100644
--- a/src/vs/workbench/parts/files/browser/views/explorerViewer.ts
+++ b/src/vs/workbench/parts/files/browser/views/explorerViewer.ts
@@ -569,10 +569,10 @@ export class FileSorter implements ISorter {
 	public compare(tree: ITree, statA: FileStat, statB: FileStat): number {
 
 		// Do not sort roots
-		if (statA.isRoot && statB.isRoot) {
-			return statA.rootIndex - statB.rootIndex;
-		}
 		if (statA.isRoot) {
+			if (statB.isRoot) {
+				return statA.rootIndex - statB.rootIndex;
+			}
 			return -1;
 		}
 		if (statB.isRoot) {