diff --git a/lib/mlenv/config/parser.sh b/lib/mlenv/config/parser.sh
index b5560fa..ebe3c9c 100644
--- a/lib/mlenv/config/parser.sh
+++ b/lib/mlenv/config/parser.sh
@@ -107,7 +107,7 @@ config_apply_env_overrides() {
     
     for mapping in "${env_mappings[@]}"; do
         IFS=':' read -r env_var config_key <<< "$mapping"
-        if [[ -n "${!env_var}" ]]; then
+        if [[ -n "${!env_var:-}" ]]; then
             MLENV_CONFIG["$config_key"]="${!env_var}"
             vlog "  Env override: $config_key = ${!env_var}"
         fi
diff --git a/lib/mlenv/core/engine.sh b/lib/mlenv/core/engine.sh
index b53e554..d7cf962 100644
--- a/lib/mlenv/core/engine.sh
+++ b/lib/mlenv/core/engine.sh
@@ -164,5 +164,5 @@ engine_get_info() {
     echo "MLEnv Engine v$(engine_get_version)"
     echo "Container Adapter: ${MLENV_ACTIVE_CONTAINER_ADAPTER:-none}"
     echo "Registry Adapter: ${MLENV_ACTIVE_REGISTRY_ADAPTER:-none}"
-    echo "Log Level: ${MLENV_LOG_LEVEL}"
+    echo "Log Level: ${MLENV_LOG_LEVEL:-info}"
 }