diff --git a/mastodon/build.gradle b/mastodon/build.gradle
index dceeaf835..dc33f6f27 100644
--- a/mastodon/build.gradle
+++ b/mastodon/build.gradle
@@ -25,7 +25,7 @@ android {
 				keystoreFile.renameTo("mastodon/keystore/nightly_keystore.jks")
 			}
 
-			storeFile = file("mastodon/keystore/nightly_keystore.jks")
+			storeFile = file(mastodon/keystore/nightly_keystore.jks)
 			storePassword System.getenv("SIGNING_STORE_PASSWORD")
 			keyAlias System.getenv("SIGNING_KEY_ALIAS")
 			keyPassword System.getenv("SIGNING_KEY_PASSWORD")