diff --git a/debian/control b/debian/control
index ccff141..4af5c7f 100644
--- a/debian/control
+++ b/debian/control
@@ -12,6 +12,6 @@ Depends: libclass-dbi-mysql-perl,
          perl-modules,
          ${misc:Depends},
          ${shlibs:Depends}
-Conflicts: ngcp-ossbss-billing (< 3)
+Conflicts: ngcp-ossbss-billing (<= 3)
 Description: CDR export utilities for NGCP platforms.
  These utilities export CDRs generated by NGCP platforms to CSV files that can be fetched by 3rd party tools.