diff --git a/mobile/android/base/db/BrowserProvider.java.in b/mobile/android/base/db/BrowserProvider.java.in
index 9a0eba67ba9..93e5ef66def 100644
--- a/mobile/android/base/db/BrowserProvider.java.in
+++ b/mobile/android/base/db/BrowserProvider.java.in
@@ -903,11 +903,17 @@ public class BrowserProvider extends ContentProvider {
             case BOOKMARKS: {
                 trace("Insert on BOOKMARKS: " + uri);
 
+                // Generate values if not specified. Don't overwrite
+                // if specified by caller.
                 long now = System.currentTimeMillis();
-                values.put(Bookmarks.DATE_CREATED, now);
-                values.put(Bookmarks.DATE_MODIFIED, now);
+                if (!values.containsKey(Bookmarks.DATE_CREATED)) {
+                    values.put(Bookmarks.DATE_CREATED, now);
+                }
+
+                if (!values.containsKey(Bookmarks.DATE_MODIFIED)) {
+                    values.put(Bookmarks.DATE_MODIFIED, now);
+                }
 
-                // Generate GUID for new bookmark. Don't override specified GUIDs.
                 if (!values.containsKey(Bookmarks.GUID)) {
                   values.put(Bookmarks.GUID, Utils.generateGuid());
                 }