diff --git a/calligra-plan.changes b/calligra-plan.changes
index e94af49..bb73361 100644
--- a/calligra-plan.changes
+++ b/calligra-plan.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Mar 22 11:30:43 UTC 2018 - wbauer@tmo.at
+
+- Conflict with calligra < 3.1.0, some icons were part of the main
+  calligra package previously
+
 -------------------------------------------------------------------
 Tue Mar 20 09:31:47 UTC 2018 - wbauer@tmo.at
 
diff --git a/calligra-plan.spec b/calligra-plan.spec
index 4f5c326..2085d30 100644
--- a/calligra-plan.spec
+++ b/calligra-plan.spec
@@ -73,6 +73,8 @@ BuildRequires:  update-desktop-files
 Recommends:     %{name}-lang = %{version}
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 Obsoletes:      calligra5-plan
+# some icons were part of the main calligra package before 3.1.0
+Conflicts:      calligra < 3.1.0
 
 %description
 Plan is the project management application of the Calligra Suite.