diff --git a/.travis.yml b/.travis.yml
index 8a3f665a..7c4fe41c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -203,7 +203,7 @@ after_script:
     fi
 
   # keep in sync with appveyor.yml
-  - if [ "${DO_PUSH_ARTIFACT}" = "yes" -a "$TRAVIS_PULL_REQUEST" = "false" ]; then
+  - if [ "${DO_PUSH_ARTIFACT}" = "yes" -a "$TRAVIS_PULL_REQUEST" = "false" -a "$TRAVIS_REPO_SLUG" = "OpenSC/OpenSC" ]; then
       git config --global user.email "builds@travis-ci.org";
       git config --global user.name "Travis CI";
       .github/push_artifacts.sh "Travis CI build ${TRAVIS_JOB_NUMBER}";
diff --git a/appveyor.yml b/appveyor.yml
index 59063ec7..2c49e91f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -111,7 +111,7 @@ deploy_script:
   # keep in sync with .travis.yml
   - bash -c "git config --global user.email 'no-reply@appveyor.com'"
   - bash -c "git config --global user.name 'AppVeyor'"
-  - bash -c "if [ \"$DO_PUSH_ARTIFACT\" = yes -a -z \"$APPVEYOR_PULL_REQUEST_NUMBER\" ]; then .github/push_artifacts.sh \"AppVeyor build ${APPVEYOR_BUILD_NUMBER}.${APPVEYOR_JOB_NUMBER}\"; fi"
+  - bash -c "if [ \"$DO_PUSH_ARTIFACT\" = yes -a -z \"$APPVEYOR_PULL_REQUEST_NUMBER\" -a \"$APPVEYOR_REPO_NAME\" = \"OpenSC/OpenSC\" ]; then .github/push_artifacts.sh \"AppVeyor build ${APPVEYOR_BUILD_NUMBER}.${APPVEYOR_JOB_NUMBER}\"; fi"
 
 cache:
   - C:\zlib -> appveyor.yml