diff --git a/Jenkinsfile b/Jenkinsfile
index 1059751..2d324dd 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -140,9 +140,11 @@ def build_version(versionParam) {
     versionArr[0] = newVersionStr
   }
   else {
-    def buildnbr = getTopUpstreamBuildNumber()
-    String nightlyPart = versionArr[0] + ".Test${buildnbr}"
-    versionArr[0] = nightlyPart
+    if(params.IMAGE_TYPE != 'fct') {
+      def buildnbr = getTopUpstreamBuildNumber()
+      String nightlyPart = versionArr[0] + ".Test${buildnbr}"
+      versionArr[0] = nightlyPart
+    }
   }
   rlsVersion = versionArr.join("-")
   return rlsVersion