diff --git a/frontend/src/config.ts b/frontend/src/config.ts
index 5eb1285c1..f0e8b03bd 100644
--- a/frontend/src/config.ts
+++ b/frontend/src/config.ts
@@ -9,7 +9,7 @@ const getEnvVariable = (name: string): string => {
         // If global value equals its placeholder value 'placeholderValue', it is considered undefined
         const placeholderValue: string = '${' + name + '}'
 
-        if (globalValue === placeholderValue || !globalValue)
+        if (globalValue === placeholderValue || globalValue === undefined)
             throw new Error(
                 `Global variable "${name}" is not set. Verify that your .env file is up to date with .env.example`
             )