diff --git a/app/appcenter-pre-build.sh b/app/appcenter-pre-build.sh
index 2b751bcf..c83288c6 100644
--- a/app/appcenter-pre-build.sh
+++ b/app/appcenter-pre-build.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
-openssl aes-256-cbc -d -in "${APPCENTER_SOURCE_DIRECTORY}${releaseKeyStore}.encrypted" -k $RELEASE_ENCRYPT_SECRET_KEY -md md5 >> ${APPCENTER_SOURCE_DIRECTORY}$releaseKeyStore
+openssl aes-256-cbc -d -in "${APPCENTER_SOURCE_DIRECTORY}/${releaseKeyStore}.encrypted" -k $RELEASE_ENCRYPT_SECRET_KEY -md md5 >> ${APPCENTER_SOURCE_DIRECTORY}/$releaseKeyStore
 
-printf 'releaseKeyAlias=%s\nreleaseKeyPassword=%s\nreleaseKeyStore=%s\nreleaseStorePassword=%s' $releaseKeyAlias $releaseKeyPassword $releaseKeyStore $releaseStorePassword > ${APPCENTER_SOURCE_DIRECTORY}keystore.properties
+printf 'releaseKeyAlias=%s\nreleaseKeyPassword=%s\nreleaseKeyStore=%s\nreleaseStorePassword=%s' $releaseKeyAlias $releaseKeyPassword $releaseKeyStore $releaseStorePassword > ${APPCENTER_SOURCE_DIRECTORY}/keystore.properties
 
-chmod +x ${APPCENTER_SOURCE_DIRECTORY}gradlew
\ No newline at end of file
+chmod +x "${APPCENTER_SOURCE_DIRECTORY}/gradlew"
\ No newline at end of file