diff --git a/CHANGELOG.md b/CHANGELOG.md
index a213565c..50e8ccf8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 - Fixed issue where single quotes could not be used in search queries. [#629](https://github.com/sourcebot-dev/sourcebot/pull/629)
+- Fixed issue where files with special characters would fail to load. [#636](https://github.com/sourcebot-dev/sourcebot/issues/636)
 
 ## [4.10.0] - 2025-11-24
 
diff --git a/packages/web/src/features/search/fileSourceApi.ts b/packages/web/src/features/search/fileSourceApi.ts
index 15cb93c3..3ea4aa73 100644
--- a/packages/web/src/features/search/fileSourceApi.ts
+++ b/packages/web/src/features/search/fileSourceApi.ts
@@ -6,6 +6,7 @@ import { search } from "./searchApi";
 import { sew } from "@/actions";
 import { withOptionalAuthV2 } from "@/withAuthV2";
 import { QueryIR } from './ir';
+
 // @todo (bkellam) #574 : We should really be using `git show <hash>:<path>` to fetch file contents here.
 // This will allow us to support permalinks to files at a specific revision that may not be indexed
 // by zoekt. We should also refactor this out of the /search folder.
@@ -21,12 +22,12 @@ export const getFileSource = async ({ fileName, repository, branch }: FileSource
                         },
                     },
                     {
-                        regexp: {
-                            regexp: fileName,
+                        substring: {
+                            pattern: fileName,
                             case_sensitive: true,
                             file_name: true,
-                            content: false
-                        },
+                            content: false,
+                        }
                     },
                     ...(branch ? [{
                         branch: {