diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9d8bec8..1533708 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,9 +8,11 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 ### Fixed
 
+- Fixes [#591](https://github.com/eamodio/vscode-gitlens/issues/591) - GitLens Error: Unable to open
 - Fixes [#620](https://github.com/eamodio/vscode-gitlens/issues/620) - Branch names with only digits always appear first — thanks to [PR #621](https://github.com/eamodio/vscode-gitlens/pull/621) by Yan Zhang ([@Eskibear](https://github.com/Eskibear))
 - Fixes [#626](https://github.com/eamodio/vscode-gitlens/issues/626) - Branch names with only digits always appear first — thanks to [PR #627](https://github.com/eamodio/vscode-gitlens/pull/627) by Marc Lasson ([@mlasson](https://github.com/mlasson))
 - Fixes [#631](https://github.com/eamodio/vscode-gitlens/issues/631) - Remotes fail to show in gui
+- Fixes [#633](https://github.com/eamodio/vscode-gitlens/issues/633) - Compare File with Previous Revision doesn't work if path contains '#'
 
 ## [9.4.1] - 2019-01-08
 
diff --git a/src/git/gitUri.ts b/src/git/gitUri.ts
index 45c788a..d8ba500 100644
--- a/src/git/gitUri.ts
+++ b/src/git/gitUri.ts
@@ -326,11 +326,13 @@ export class GitUri extends ((Uri as any) as UriEx) {
     static git(fileName: string, repoPath?: string) {
         const path = GitUri.resolve(fileName, repoPath);
         return Uri.parse(
-            `git:${path}?${JSON.stringify({
-                // Ensure we use the fsPath here, otherwise the url won't open properly
-                path: Uri.file(path).fsPath,
-                ref: '~'
-            })}`
+            `git:${encodeURIComponent(path)}?${encodeURIComponent(
+                JSON.stringify({
+                    // Ensure we use the fsPath here, otherwise the url won't open properly
+                    path: Uri.file(path).fsPath,
+                    ref: '~'
+                })
+            )}`
         );
     }
 
@@ -398,9 +400,9 @@ export class GitUri extends ((Uri as any) as UriEx) {
         };
 
         const uri = Uri.parse(
-            `${DocumentSchemes.GitLens}:///${repoName}@${shortSha}${
-                filePath === slash ? empty : filePath
-            }?${JSON.stringify(data)}`
+            `${DocumentSchemes.GitLens}:///${encodeURIComponent(repoName)}@${shortSha}${
+                filePath === slash ? empty : encodeURIComponent(filePath)
+            }?${encodeURIComponent(JSON.stringify(data))}`
         );
         return uri;
     }