diff --git a/src/main-process/atom-application.js b/src/main-process/atom-application.js
index 378fb5167..415d0b4e1 100644
--- a/src/main-process/atom-application.js
+++ b/src/main-process/atom-application.js
@@ -846,9 +846,9 @@ class AtomApplication extends EventEmitter {
     const normalizedPathsToOpen = locationsToOpen.map(location => location.pathToOpen).filter(Boolean)
 
     let existingWindow
-    if (!newWindow && normalizedPathsToOpen.length > 0) {
+    if (addToLastWindow && normalizedPathsToOpen.length > 0) {
       existingWindow = this.windowForPaths(normalizedPathsToOpen, devMode)
-      if (!existingWindow && addToLastWindow) {
+      if (!existingWindow) {
         let lastWindow = window || this.getLastFocusedWindow()
         if (lastWindow && lastWindow.devMode === devMode) {
           existingWindow = lastWindow