diff --git a/.semaphore/cp_dockerfile_build.yml b/.semaphore/cp_dockerfile_build.yml
index ee70c618b..676f6b5f8 100644
--- a/.semaphore/cp_dockerfile_build.yml
+++ b/.semaphore/cp_dockerfile_build.yml
@@ -117,7 +117,7 @@ blocks:
     dependencies: ["Validation"]
     run:
       # don't run the tests on non-functional changes...
-      when: "change_in('/', {exclude: ['/.deployed-versions/', '.github/']})"
+      when: "change_in('/', {exclude: ['/.deployed-versions/', '.github/'], default_branch: 'master'})"
     task:
       jobs:
         - name: Build, Test, & Scan ubi9
@@ -177,7 +177,7 @@ blocks:
     dependencies: ["Validation"]
     run:
       # don't run the tests on non-functional changes...
-      when: "change_in('/', {exclude: ['/.deployed-versions/', '.github/']})"
+      when: "change_in('/', {exclude: ['/.deployed-versions/', '.github/'], default_branch: 'master'})"
     task:
       agent:
         machine: