diff --git a/bookwyrm/importers/importer.py b/bookwyrm/importers/importer.py
index 71f02231..db13b652 100644
--- a/bookwyrm/importers/importer.py
+++ b/bookwyrm/importers/importer.py
@@ -20,20 +20,20 @@ class Importer:
     encoding = "UTF-8"
 
     # these are from Goodreads
-    row_mappings_guesses = {
-        "id": ["id", "book id"],
-        "title": ["title"],
-        "authors": ["author", "authors", "primary author"],
-        "isbn_13": ["isbn13", "isbn"],
-        "isbn_10": ["isbn10", "isbn"],
-        "shelf": ["shelf", "exclusive shelf", "read status"],
-        "review_name": ["review name"],
-        "review_body": ["my review", "review"],
-        "rating": ["my rating", "rating", "star rating"],
-        "date_added": ["date added", "entry date", "added"],
-        "date_started": ["date started", "started"],
-        "date_finished": ["date finished", "last date read", "date read", "finished"],
-    }
+    row_mappings_guesses = [
+        ("id", ["id", "book id"]),
+        ("title", ["title"]),
+        ("authors", ["author", "authors", "primary author"]),
+        ("isbn_10", ["isbn10", "isbn"]),
+        ("isbn_13", ["isbn13", "isbn"]),
+        ("shelf", ["shelf", "exclusive shelf", "read status"]),
+        ("review_name", ["review name"]),
+        ("review_body", ["my review", "review"]),
+        ("rating", ["my rating", "rating", "star rating"]),
+        ("date_added", ["date added", "entry date", "added"]),
+        ("date_started", ["date started", "started"]),
+        ("date_finished", ["date finished", "last date read", "date read", "finished"]),
+    ]
     date_fields = ["date_added", "date_started", "date_finished"]
     shelf_mapping_guesses = {
         "to-read": ["to-read"],
@@ -60,7 +60,7 @@ class Importer:
     def create_row_mappings(self, headers):
         """guess what the headers mean"""
         mappings = {}
-        for (key, guesses) in self.row_mappings_guesses.items():
+        for (key, guesses) in self.row_mappings_guesses:
             value = [h for h in headers if h.lower() in guesses]
             value = value[0] if len(value) else None
             if value:
diff --git a/bookwyrm/models/import_job.py b/bookwyrm/models/import_job.py
index 6b8f0b46..18565017 100644
--- a/bookwyrm/models/import_job.py
+++ b/bookwyrm/models/import_job.py
@@ -12,6 +12,8 @@ from .fields import PrivacyLevels
 
 def unquote_string(text):
     """resolve csv quote weirdness"""
+    if not text:
+        return None
     match = re.match(r'="([^"]*)"', text)
     if match:
         return match.group(1)
@@ -122,7 +124,7 @@ class ImportItem(models.Model):
     @property
     def isbn(self):
         """pulls out the isbn13 field from the csv line data"""
-        return unquote_string(self.normalized_data["isbn_13"])
+        return unquote_string(self.normalized_data["isbn_13"]) or unquote_string(self.normalized_data["isbn_10"])
 
     @property
     def shelf(self):
diff --git a/bookwyrm/templates/import/import_status.html b/bookwyrm/templates/import/import_status.html
index f5f590e1..8208a2fa 100644
--- a/bookwyrm/templates/import/import_status.html
+++ b/bookwyrm/templates/import/import_status.html
@@ -125,7 +125,7 @@
                     {{ item.normalized_data.title }}
                 </td>
                 <td>
-                    {{ item.isbn }}
+                    {{ item.isbn|default:'' }}
                 </td>
                 <td>
                     {{ item.normalized_data.authors }}
diff --git a/bookwyrm/tests/importers/test_goodreads_import.py b/bookwyrm/tests/importers/test_goodreads_import.py
index a51eca89..4a043b59 100644
--- a/bookwyrm/tests/importers/test_goodreads_import.py
+++ b/bookwyrm/tests/importers/test_goodreads_import.py
@@ -53,9 +53,9 @@ class GoodreadsImport(TestCase):
         self.assertEqual(import_items[0].index, 0)
         self.assertEqual(import_items[0].data["Book Id"], "42036538")
         self.assertEqual(
-            import_items[0].normalized_data["isbn_13"], '=""9781250313195"'
+            import_items[0].normalized_data["isbn_13"], '="9781250313195"'
         )
-        self.assertEqual(import_items[0].normalized_data["isbn_10"], '=""1250313198"')
+        self.assertEqual(import_items[0].normalized_data["isbn_10"], '="1250313198"')
 
         self.assertEqual(import_items[1].index, 1)
         self.assertEqual(import_items[1].data["Book Id"], "52691223")