diff --git a/debian/control b/debian/control
index 630b94cc..3f758c92 100644
--- a/debian/control
+++ b/debian/control
@@ -9,9 +9,9 @@ Homepage: http://git.entrouvert.org/publik-base-theme.git
 Package: publik-base-theme
 Architecture: all
 Depends: ${shlibs:Depends}, ${misc:Depends}, python3-gadjo
-Conflicts: python-authentic2 (< 2.1.20.742.gb6ee096-0),
+Conflicts: python-authentic2 (<< 2.1.20.742.gb6ee096-0),
            python-django (<= 1:1.11),
-           python-xstatic-roboto-fontface (< 0.5.0.0),
-           python3-xstatic-roboto-fontface (< 0.5.0.0)
-Breaks: combo (< 0.7.1)
+           python-xstatic-roboto-fontface (<< 0.5.0.0),
+           python3-xstatic-roboto-fontface (<< 0.5.0.0)
+Breaks: combo (<< 0.7.1)
 Description: Publik Base Theme