diff --git a/.kokoro/samples-test.sh b/.kokoro/samples-test.sh
index 8c5d108cb..acad993f0 100755
--- a/.kokoro/samples-test.sh
+++ b/.kokoro/samples-test.sh
@@ -49,6 +49,12 @@ if [ -f samples/package.json ]; then
         $KOKORO_GFILE_DIR/linux_amd64/flakybot
       }
       trap cleanup EXIT HUP
+    else
+      # Check if there are any changes in the "samples" directory only for presubmits. 
+      if git diff --quiet HEAD~1 HEAD -- samples/; then
+        echo "No changes detected in the samples directory. Skipping sample tests."
+        exit 0
+      fi
     fi
 
     npm run samples-test
diff --git a/owlbot.py b/owlbot.py
index b61994e30..d3f2ea272 100644
--- a/owlbot.py
+++ b/owlbot.py
@@ -64,7 +64,7 @@
 
 common_templates = gcp.CommonTemplates()
 templates = common_templates.node_library(source_location='build/src')
-s.copy(templates)
+s.copy(templates, excludes=[".kokoro/samples-test.sh"])
 
 node.postprocess_gapic_library_hermetic()