diff --git a/Jenkinsfile b/Jenkinsfile
index eb9df70..6a9c3e6 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -23,9 +23,12 @@ pipeline {
                         error "Version file not found: ${versionFile}"
                     }
                     def versionText = readFile(file: versionFile)
+                    echo versionText
                     def matcher = versionText =~ /version=(.*)(-[A-z]*)?/
                     if (matcher) {
                         env.VERSION = matcher[0][1]
+                        if (env.VERSION == null)
+                            error "Failed to extract version from ${versionFile}"
                         echo "Extracted VERSION: ${env.VERSION}"
                     } else {
                         error "Failed to extract version from ${versionFile}"