diff --git a/libs/common/src/services/api.service.ts b/libs/common/src/services/api.service.ts
index f9e05e7635..0c508bfeb8 100644
--- a/libs/common/src/services/api.service.ts
+++ b/libs/common/src/services/api.service.ts
@@ -1886,7 +1886,7 @@ export class ApiService implements ApiServiceAbstraction {
     });
 
     if (flagEnabled("prereleaseBuild")) {
-      headers.set("Is-Prerelease", "true");
+      headers.set("Is-Prerelease", "1");
     }
     if (this.customUserAgent != null) {
       headers.set("User-Agent", this.customUserAgent);