diff --git a/chrome/content/zotero/xpcom/integration.js b/chrome/content/zotero/xpcom/integration.js
index 7302fe775..f0e8081cc 100644
--- a/chrome/content/zotero/xpcom/integration.js
+++ b/chrome/content/zotero/xpcom/integration.js
@@ -1008,7 +1008,10 @@ Zotero.Integration.Fields.prototype._updateDocument = async function(forceCitati
 				);
 				citationField.select();
 				var result = this._session.displayAlert(
-					Zotero.getString("integration.citationChanged")+"\n\n"+Zotero.getString("integration.citationChanged.description"), 
+					Zotero.getString("integration.citationChanged")+"\n\n"
+						+ Zotero.getString("integration.citationChanged.description")+"\n\n"
+						+ Zotero.getString("integration.citationChanged.original", citation.properties.plainCitation)+"\n"
+						+ Zotero.getString("integration.citationChanged.modified", plainCitation)+"\n", 
 					DIALOG_ICON_CAUTION, DIALOG_BUTTONS_YES_NO);
 				if (result) {
 					citation.properties.dontUpdate = true;
@@ -2426,7 +2429,10 @@ Zotero.Integration.Citation = class {
 					+ "Original: " + this.properties.plainCitation + "\n"
 					+ "Current:  " + fieldText
 				);
-				if (!Zotero.Integration.currentSession.displayAlert(Zotero.getString("integration.citationChanged.edit"),
+				if (!Zotero.Integration.currentSession.displayAlert(
+					Zotero.getString("integration.citationChanged.edit")+"\n\n"
+						+ Zotero.getString("integration.citationChanged.original", this.properties.plainCitation)+"\n"
+						+ Zotero.getString("integration.citationChanged.modified", fieldText)+"\n",
 						DIALOG_ICON_WARNING, DIALOG_BUTTONS_OK_CANCEL)) {
 					throw new Zotero.Exception.UserCancelled("editing citation");
 				}
diff --git a/chrome/locale/en-US/zotero/zotero.properties b/chrome/locale/en-US/zotero/zotero.properties
index 30755363e..75f3821fa 100644
--- a/chrome/locale/en-US/zotero/zotero.properties
+++ b/chrome/locale/en-US/zotero/zotero.properties
@@ -861,6 +861,8 @@ integration.corruptBibliography.description = All items cited in the text will a
 integration.citationChanged				= You have modified this citation since Zotero generated it. Do you want to keep your modifications and prevent future updates?
 integration.citationChanged.description	= Clicking "Yes" will prevent Zotero from updating this citation if you add additional citations, switch styles, or modify the item to which it refers. Clicking "No" will erase your changes.
 integration.citationChanged.edit		= You have modified this citation since Zotero generated it. Editing will clear your modifications. Do you want to continue?
+integration.citationChanged.original    = Original: %S
+integration.citationChanged.modified    = Modified: %S
 integration.delayCitationUpdates.alert.text1 = Updating citations in this document is taking a long time. Would you like to disable automatic citation updates?
 integration.delayCitationUpdates.alert.text2.toolbar = You will need to click Refresh in the Zotero toolbar when you are done inserting citations.
 integration.delayCitationUpdates.alert.text2.tab = You will need to click Refresh in the Zotero tab when you are done inserting citations.