diff --git a/Jenkinsfile b/Jenkinsfile
index 77b1874..135f752 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -28,7 +28,8 @@ pipeline {
 
                     //to matrix
                     env.avatarMXC=sh(returnStdout: true, script:  """
-                        curl 'https://greyn.club:8448/_matrix/media/v3/upload?filename=potterverse-wizards-are-morons-avatar-\$(mktemp -u XXX).png' \
+                        url= "https://greyn.club:8448/_matrix/media/v3/upload"'?'"filename=potterverse-wizards-are-morons-avatar-\$(mktemp -u XXX).png"
+                        curl "\$url" \
                           -X 'POST' \
                           -H 'authorization: Bearer ${env.JENKINSONMATRIXTOKEN}' \
                           -H 'Content-Type: image/png' \