diff --git a/britney.conf.template b/britney.conf.template
index 20f0754..b1df068 100644
--- a/britney.conf.template
+++ b/britney.conf.template
@@ -9,6 +9,10 @@ TESTING           = /path/to/target/suite
 # TPU               = /path/to/secondary-source/suite
 # PU                = /path/to/another-source/suite
 
+# By default, package removal propagates to the target suite. To disable this,
+# e.g. for partial suites like experimental or spu, uncomment the next line
+# PARTIAL_SOURCE    = true
+
 # Output
 NONINST_STATUS      = /path/to/britneys-output-dir/non-installable-status
 EXCUSES_OUTPUT      = /path/to/britneys-output-dir/excuses.html
diff --git a/britney2/excusefinder.py b/britney2/excusefinder.py
index 4f7cf9b..7455aaf 100644
--- a/britney2/excusefinder.py
+++ b/britney2/excusefinder.py
@@ -110,6 +110,8 @@ class ExcuseFinder(object):
         In the former case, a new excuse is appended to the object
         attribute excuses.
         """
+        if hasattr(self.options, 'partial_source'):
+            return False
         # if the source package is available in unstable, then do nothing
         source_suite = self.suite_info.primary_source_suite
         pkg = item.package