diff --git a/haystack/logging.py b/haystack/logging.py
index 53387af72..5269f0b1b 100644
--- a/haystack/logging.py
+++ b/haystack/logging.py
@@ -192,7 +192,7 @@ def patch_make_records_to_use_kwarg_string_interpolation(original_make_records:
         safe_extra = extra or {}
         try:
             interpolated_msg = msg.format(**safe_extra)
-        except (KeyError, ValueError):
+        except (KeyError, ValueError, IndexError):
             interpolated_msg = msg
         return original_make_records(name, level, fn, lno, interpolated_msg, (), exc_info, func, extra, sinfo)
 
diff --git a/releasenotes/notes/fix-logging-index-error-c58691db633542c5.yaml b/releasenotes/notes/fix-logging-index-error-c58691db633542c5.yaml
new file mode 100644
index 000000000..aff6ccdb6
--- /dev/null
+++ b/releasenotes/notes/fix-logging-index-error-c58691db633542c5.yaml
@@ -0,0 +1,4 @@
+---
+fixes:
+  - |
+    Fixed an index error in the logging module when arbitrary strings are logged.