diff --git a/additions/camoucfg/MaskConfig.hpp b/additions/camoucfg/MaskConfig.hpp
index 76fc407..caf80fc 100644
--- a/additions/camoucfg/MaskConfig.hpp
+++ b/additions/camoucfg/MaskConfig.hpp
@@ -44,10 +44,14 @@ inline std::optional<std::string> get_env_utf8(const std::string& name) {
 }
 
 inline const nlohmann::json& GetJson() {
-  static const nlohmann::json jsonConfig = []() {
-    std::string jsonString;
-    int index = 1;
+  static std::once_flag initFlag;
+  static nlohmann::json jsonConfig;
 
+  std::call_once(initFlag, []() {
+    std::string jsonString;
+
+    // First try the chunked environment variables
+    int index = 1;
     while (true) {
       std::string envName = "CAMOU_CONFIG_" + std::to_string(index);
       auto partialConfig = get_env_utf8(envName);
@@ -57,23 +61,36 @@ inline const nlohmann::json& GetJson() {
       index++;
     }
 
+    // If no chunked variables found, try the original CAMOU_CONFIG
     if (jsonString.empty()) {
-      // Check for the original CAMOU_CONFIG as fallback
       auto originalConfig = get_env_utf8("CAMOU_CONFIG");
-      if (originalConfig) jsonString = *originalConfig;
+      if (originalConfig) {
+        jsonString = *originalConfig;
+      }
     }
 
-    if (jsonString.empty()) return nlohmann::json{};
-
-    // Validate
-    if (!nlohmann::json::accept(jsonString)) {
-      printf_stderr("ERROR: Invalid JSON passed to CAMOU_CONFIG!\n");
-      return nlohmann::json{};
+    // If still empty, return an empty JSON object
+    if (jsonString.empty()) {
+      jsonConfig = nlohmann::json{};
+      return;
     }
 
-    nlohmann::json result = nlohmann::json::parse(jsonString);
-    return result;
-  }();
+    // Validate and parse the JSON
+    try {
+      if (!nlohmann::json::accept(jsonString)) {
+        printf_stderr("ERROR: Invalid JSON passed to CAMOU_CONFIG!\n");
+        jsonConfig = nlohmann::json{};
+        return;
+      }
+
+      jsonConfig = nlohmann::json::parse(jsonString);
+    } catch (const nlohmann::json::exception& e) {
+      printf_stderr("ERROR: JSON parsing failed: %s\n", e.what());
+      jsonConfig = nlohmann::json{};
+    }
+  });
+
+  // Return the cached JSON object
   return jsonConfig;
 }