diff --git a/ext/bg/js/database.js b/ext/bg/js/database.js
index 6a171dd4..23041e40 100644
--- a/ext/bg/js/database.js
+++ b/ext/bg/js/database.js
@@ -159,7 +159,7 @@ class Database {
                 let termDeleter = Promise.resolve();
                 if (info.hasTerms) {
                     const termDeleterFunc = () => {
-                        return this.db.terms.where('dictionary').equals(title).limit(1000).delete().then(count => {
+                        return this.db.terms.where('dictionary').equals(title).limit(500).delete().then(count => {
                             if (count === 0) {
                                 return Promise.resolve();
                             }
@@ -179,7 +179,7 @@ class Database {
                 let kanjiDeleter = Promise.resolve();
                 if (info.hasKanji) {
                     const kanjiDeleterFunc = () => {
-                        return this.db.kanji.where('dictionary').equals(title).limit(1000).delete().then(count => {
+                        return this.db.kanji.where('dictionary').equals(title).limit(500).delete().then(count => {
                             if (count === 0) {
                                 return Promise.resolve();
                             }
diff --git a/ext/bg/js/options-form.js b/ext/bg/js/options-form.js
index 736ec023..2cabe162 100644
--- a/ext/bg/js/options-form.js
+++ b/ext/bg/js/options-form.js
@@ -115,40 +115,6 @@ function updateVisibility(opts) {
     }
 }
 
-function populateDictionaries(opts) {
-    const dictGroups = $('#dict-groups');
-    dictGroups.empty();
-
-    const dictError = $('#dict-error');
-    dictError.hide();
-
-    const dictSpinner = $('#dict-spinner');
-    dictSpinner.show();
-
-    return database().getDictionaries().then(rows => {
-        rows.forEach(row => {
-            const dictOpts = opts.dictionaries[row.title] || {enableTerms: false, enableKanji: false};
-            const html = Handlebars.templates['dictionary.html']({
-                title: row.title,
-                version: row.version,
-                hasTerms: row.hasTerms,
-                hasKanji: row.hasKanji,
-                enableTerms: dictOpts.enableTerms,
-                enableKanji: dictOpts.enableKanji
-            });
-
-            dictGroups.append($(html));
-        });
-
-        $('.dict-enable-terms, .dict-enable-kanji').change(onOptionsChanged);
-        $('.dict-delete').click(onDictionaryDelete);
-    }).catch(error => {
-        dictError.show().find('span').text(error);
-    }).then(() => {
-        dictSpinner.hide();
-    });
-}
-
 function onDictionaryDelete() {
     const dictGroup = $(this).closest('.dict-group');
 
@@ -199,7 +165,7 @@ function onDictionaryImport() {
     const dictUrl = $('#dict-url');
     loadOptions().then(opts => {
         database().importDictionary(dictUrl.val(), callback).then(summary => {
-            opts.dictionaries[summary.title] = {hasTerms: summary.hasTerms, hasKanji: summary.hasKanji};
+            opts.dictionaries[summary.title] = {enableTerms: summary.hasTerms, enableKanji: summary.hasKanji};
             return saveOptions(opts);
         }).then(() => {
             return populateDictionaries(opts);
@@ -302,6 +268,49 @@ function populateAnkiFields(element, opts) {
     });
 }
 
+function populateDictionaries(opts) {
+    const dictGroups = $('#dict-groups');
+    dictGroups.empty();
+
+    const dictError = $('#dict-error');
+    dictError.hide();
+
+    const dictWarning = $('#dict-warning');
+    dictWarning.hide();
+
+    const dictSpinner = $('#dict-spinner');
+    dictSpinner.show();
+
+    let dictCount = 0;
+    return database().getDictionaries().then(rows => {
+        rows.forEach(row => {
+            const dictOpts = opts.dictionaries[row.title] || {enableTerms: false, enableKanji: false};
+            const html = Handlebars.templates['dictionary.html']({
+                title: row.title,
+                version: row.version,
+                hasTerms: row.hasTerms,
+                hasKanji: row.hasKanji,
+                enableTerms: dictOpts.enableTerms,
+                enableKanji: dictOpts.enableKanji
+            });
+
+            dictGroups.append($(html));
+            ++dictCount;
+        });
+
+        $('.dict-enable-terms, .dict-enable-kanji').change(onOptionsChanged);
+        $('.dict-delete').click(onDictionaryDelete);
+    }).catch(error => {
+        dictError.show().find('span').text(error);
+    }).then(() => {
+        if (dictCount === 0) {
+            dictWarning.show();
+        }
+
+        dictSpinner.hide();
+    });
+}
+
 function onOptionsChanged(e) {
     if (!e.originalEvent && !e.isTrigger) {
         return;
diff --git a/ext/bg/options.html b/ext/bg/options.html
index 4f74a58e..5d949bc2 100644
--- a/ext/bg/options.html
+++ b/ext/bg/options.html
@@ -7,7 +7,7 @@
         <link rel="stylesheet" type="text/css" href="../lib/bootstrap-3.3.6-dist/css/bootstrap-theme.min.css">
         <style>
             #anki-spinner, #anki-general, #anki-error,
-            #dict-spinner, .dict-import-progress, .dict-delete-progress,
+            #dict-spinner, #dict-error, #dict-warning, .dict-import-progress, .dict-delete-progress,
             #options-advanced {
                 display: none;
             }
@@ -70,6 +70,11 @@
 
                 <div id="dict-groups"></div>
 
+                <div class="alert alert-warning" id="dict-warning">
+                    <strong>No dictionaries found:</strong>
+                    please use the dropdown below to install packaged and external dictionaries
+                </div>
+
                 <div class="alert alert-danger" id="dict-error">
                     <strong>Error:</strong>
                     <span></span>