diff --git a/src/cli/sha.ts b/src/cli/sha.ts
index eb2f35a..90772e7 100644
--- a/src/cli/sha.ts
+++ b/src/cli/sha.ts
@@ -1,3 +1,3 @@
 declare var __GIT_SHA__: string | undefined
 
-export const SHA: string = __GIT_SHA__ ?? 'dev'
+export const SHA: string = typeof __GIT_SHA__ !== 'undefined' ? __GIT_SHA__ : 'dev'