diff --git a/plugin/source/dynamix.unraid.net/pkg_build.sh b/plugin/source/dynamix.unraid.net/pkg_build.sh
index 76ee5c1cf..a906f87cc 100755
--- a/plugin/source/dynamix.unraid.net/pkg_build.sh
+++ b/plugin/source/dynamix.unraid.net/pkg_build.sh
@@ -93,6 +93,15 @@ sed -i -E "s#(ENTITY NGHTTP3_TXZ\s*)\".*\"#\1\"${NGHTTP3_TGZ}\"#g" "${plgfile}"
 sed -i -E "s#(ENTITY API_version\s*)\".*\"#\1\"${API_VERSION}\"#g" "${plgfile}"
 sed -i -E "s#(ENTITY API_SHA256\s*)\".*\"#\1\"${API_SHA256}\"#g" "${plgfile}"
 
+# validate that all ENTITY values were replaced
+required_entities=("name" "env" "version" "pluginURL" "SHA256" "MAIN_TXZ" "API_TGZ" "NODEJS_FILENAME" "NODEJS_SHA256" "NODE_TXZ" "NGHTTP3_FILENAME" "NGHTTP3_SHA256" "NGHTTP3_TXZ" "API_version" "API_SHA256")
+for entity in "${required_entities[@]}"; do
+  if ! grep -q "ENTITY ${entity} \"[^\"]*\"" "${plgfile}"; then
+    echo "Error: ENTITY ${entity} was not replaced correctly in ${plgfile}"
+    exit 1
+  fi
+done
+
 # add changelog for major versions
 # sed -i "/<CHANGES>/a ###${version}\n" ${plgfile}