diff --git a/chrome/locale/en-US/zotero/zotero.properties b/chrome/locale/en-US/zotero/zotero.properties
index 65667af6d..f6c31fc57 100644
--- a/chrome/locale/en-US/zotero/zotero.properties
+++ b/chrome/locale/en-US/zotero/zotero.properties
@@ -409,6 +409,9 @@ ingester.importReferRISDialog.title	= Zotero RIS/Refer Import
 ingester.importReferRISDialog.text	= Do you want to import items from "%1$S" into Zotero?\n\nYou can disable automatic RIS/Refer import in the Zotero preferences.
 ingester.importReferRISDialog.checkMsg = Always allow for this site
 
+ingester.importFile.title	= Import File
+ingester.importFile.text	= Do you want to import the file "%S"?\n\nItems will be added to a new collection.
+
 db.dbCorrupted					= The Zotero database '%S' appears to have become corrupted.
 db.dbCorrupted.restart			= Please restart %S to attempt an automatic restore from the last backup.
 db.dbCorruptedNoBackup			= The Zotero database '%S' appears to have become corrupted, and no automatic backup is available.\n\nA new database file has been created. The damaged file was saved in your Zotero directory.
diff --git a/components/zotero-service.js b/components/zotero-service.js
index 21c65feb7..2c845ed7c 100644
--- a/components/zotero-service.js
+++ b/components/zotero-service.js
@@ -380,11 +380,17 @@ ZoteroCommandLineHandler.prototype = {
 					// Install CSL file
 					this.Zotero.Styles.install(file);
 				} else {
-					// Show file import dialog
-					var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
-									   .getService(Components.interfaces.nsIWindowMediator);
-					var browserWindow = wm.getMostRecentWindow("navigator:browser");
-					browserWindow.Zotero_File_Interface.importFile(file);
+					// Ask before importing
+					if(Components.classes["@mozilla.org/embedcomp/prompt-service;1"]
+							.getService(Components.interfaces.nsIPromptService)
+							.confirm(null, this.Zotero.getString('ingester.importFile.title'),
+							this.Zotero.getString('ingester.importFile.text', [file.leafName]))) {
+						// Perform file import in front window
+						var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
+										   .getService(Components.interfaces.nsIWindowMediator);
+						var browserWindow = wm.getMostRecentWindow("navigator:browser");
+						browserWindow.Zotero_File_Interface.importFile(file);
+					}
 				}
 			}
 		}