diff --git a/manifest.json b/manifest.json
index 96dfb51..28a149c 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
   "id": "dataview-autocompletion",
   "name": "Dataview Autocompletion",
-  "version": "0.8.0",
+  "version": "0.8.1",
   "minAppVersion": "0.15.0",
   "description": "Adds autocompletion to Dataview metadata fields",
   "author": "Daniel Bauer",
diff --git a/package.json b/package.json
index 0afef64..ea8c937 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "obsidian-dataview-autocompletion",
-  "version": "0.8",
+  "version": "0.8.1",
   "description": "This is a plugin for Obsidian that provides autocompletion for Dataview metadata fields",
   "main": "main.js",
   "scripts": {
diff --git a/src/DataviewSuggester.ts b/src/DataviewSuggester.ts
index c125eb0..48072d6 100644
--- a/src/DataviewSuggester.ts
+++ b/src/DataviewSuggester.ts
@@ -159,6 +159,8 @@ export class DataviewSuggester extends EditorSuggest<String> {
             }
 
             const page = dataviewApi.page(file.path);
+            if (page === undefined) continue; // not a markdown file
+
             const fields = Object.keys(page)
                 .filter((k) => k !== "file")
                 .map((k) => [k, page[k]]);
@@ -218,6 +220,8 @@ export class DataviewSuggester extends EditorSuggest<String> {
             const updateCompositeValues = [];
 
             const page = getAPI(this.app).page(file.path);
+            if (page === undefined) return; // not a markdown file
+
             const fields = Object.keys(page)
                 .filter((k) => k !== "file")
                 .map((k) => [k, page[k]]);
diff --git a/test-vault/.obsidian/community-plugins.json b/test-vault/.obsidian/community-plugins.json
index 18529d6..ac2b483 100644
--- a/test-vault/.obsidian/community-plugins.json
+++ b/test-vault/.obsidian/community-plugins.json
@@ -1,5 +1,6 @@
 [
   "sample-plugin",
   "dataview",
-  "obsidian-dataview-autocompletion"
+  "obsidian-dataview-autocompletion",
+  "dataview-autocompletion"
 ]
\ No newline at end of file
diff --git a/test-vault/not-a-markdown-file.json b/test-vault/not-a-markdown-file.json
new file mode 100644
index 0000000..f7df712
--- /dev/null
+++ b/test-vault/not-a-markdown-file.json
@@ -0,0 +1 @@
+{"test": "this is a test file"}