diff --git a/.cirrus.yml b/.cirrus.yml
index 7244296a6c..ca569feb63 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -88,7 +88,7 @@ linux_task_template: &LINUX_TASK_TEMPLATE
 #
 compute_credits_template: &CREDITS_TEMPLATE
   # Only use credits for non-DRAFT pull-requests to SciTools/iris master branch by collaborators
-  use_compute_credits: ${CIRRUS_REPO_FULL_NAME} == "SciTools/iris" && ${CIRRUS_USER_COLLABORATOR} == "true" && ${CIRRUS_PR_DRAFT} == "false" && ${CIRRUS_BASE_BRANCH} == "master" && ${CIRRUS_PR} != ""
+  use_compute_credits: ${CIRRUS_REPO_FULL_NAME} == "SciTools/iris" && ${CIRRUS_USER_COLLABORATOR} == "true" && ${CIRRUS_PR_DRAFT} == "false" && ${CIRRUS_PR} != ""
 
 
 #