diff --git a/case-lib/lib.sh b/case-lib/lib.sh
index 92ae4795..a91846d7 100644
--- a/case-lib/lib.sh
+++ b/case-lib/lib.sh
@@ -740,11 +740,14 @@ logger_disabled()
 {
     local ldcFile
     # Some firmware/OS configurations do not support logging.
-    ldcFile=$(find_ldc_file) || {
-        dlogi '.ldc dictionary file not found, SOF logs collection disabled'
-        return 0 # 0 is 'true'
-    }
-
+    # mtrace doesn't require ldc file on IPC4-Zephyr platforms.
+    if ! is_ipc4; then
+        ldcFile=$(find_ldc_file) || {
+            dlogi '.ldc dictionary file not found, SOF logs collection disabled'
+            return 0 # 0 is 'true'
+        }
+    fi
+    
     # Disable logging when available...
     if [ ${OPT_VAL['s']} -eq 0 ]; then
         return 0