diff --git a/server/Dockerfile b/server/Dockerfile
index 560ca42..d44c199 100644
--- a/server/Dockerfile
+++ b/server/Dockerfile
@@ -4,7 +4,7 @@ FROM node:8-alpine AS build
 
 RUN apk add --no-cache curl gnupg make g++ bash python
 
-# Note: context starts in directory above (see docker-compose file)
+# Note: context starts in the directory above (see docker-compose file)
 COPY server /var/www/server
 
 WORKDIR /var/www/server
@@ -14,7 +14,7 @@ RUN npm run build
 
 FROM node:8-alpine
 
-# Note: context starts in directory above (see docker-compose file)
+# Note: context starts in the directory above (see docker-compose file)
 COPY server/package.json /var/www/server/
 
 WORKDIR /var/www/server
diff --git a/server/jest.config.js b/server/jest.config.js
index c0f5ed7..3a63c6b 100644
--- a/server/jest.config.js
+++ b/server/jest.config.js
@@ -5,9 +5,9 @@ module.exports = {
       "useBabelrc": true,
       "tsConfigFile": "tsconfig.jest.json"
     },
-  "GIT_VERSION": "test_version",
-  "GIT_COMMITHASH": "test_commit_hash",
-  "GIT_BRANCH": "test_branch"
+    "GIT_VERSION": "version",
+    "GIT_COMMITHASH": "commit_hash",
+    "GIT_BRANCH": "branch"
   },
   "transform": {
     "\\.ts": "ts-jest"
diff --git a/server/src/config.ts b/server/src/config.ts
index 061c9dd..8acfd32 100644
--- a/server/src/config.ts
+++ b/server/src/config.ts
@@ -8,7 +8,8 @@ import * as path from 'path';
 import * as fs from 'fs';
 import * as os from 'os';
 
-
+// GIT_BRANCH, GIT_COMMITHASH, GIT_VERSION variables are defined by webpack
+// TypeScript doesn't know that these variables exist
 declare const GIT_BRANCH: string;
 declare const GIT_COMMITHASH: string;
 declare const GIT_VERSION: string;