diff --git a/samples/react-functional-component-with-data-fetch/.devcontainer/spfx-startup.sh b/samples/react-functional-component-with-data-fetch/.devcontainer/spfx-startup.sh
index ca531bdf2..8e7450b28 100644
--- a/samples/react-functional-component-with-data-fetch/.devcontainer/spfx-startup.sh
+++ b/samples/react-functional-component-with-data-fetch/.devcontainer/spfx-startup.sh
@@ -7,9 +7,11 @@ echo
 echo -e "\e[1;94mGenerating dev certificate\e[0m"
 gulp trust-dev-cert
 
+# Convert the generated PEM certificate to a  CER certificate
+openssl x509 -inform PEM -in ~/.rushstack/rushstack-serve.pem -outform DER -out ./spfx-dev-cert.cer
 
-cp ~/.gcb-serve-data/gcb-serve.cer ./spfx-dev-cert.cer
-cp ~/.gcb-serve-data/gcb-serve.cer ./spfx-dev-cert.pem
+# Copy the PEM ecrtificate for non-Windows hosts
+cp ~/.rushstack/rushstack-serve.pem ./spfx-dev-cert.pem
 
 ## add *.cer to .gitignore to prevent certificates from being saved in repo
 if ! grep -Fxq '*.cer' ./.gitignore
@@ -28,4 +30,4 @@ fi
 echo
 echo -e "\e[1;92mReady!\e[0m"
 
-echo -e "\n\e[1;94m**********\nOptional: if you plan on using gulp serve, don't forget to add the container certificate to your local machine. Please visit https://aka.ms/spfx-devcontainer for more information\n**********"
\ No newline at end of file
+echo -e "\n\e[1;94m**********\nOptional: if you plan on using gulp serve, don't forget to add the container certificate to your local machine. Please visit https://aka.ms/spfx-devcontainer for more information\n**********"