diff --git a/backends/exllamav2/grammar.py b/backends/exllamav2/grammar.py
index 9a6b520..62f50a3 100644
--- a/backends/exllamav2/grammar.py
+++ b/backends/exllamav2/grammar.py
@@ -93,9 +93,8 @@ def add_kbnf_filter(
             # Validate KBNF and create formatter
             f = FormatterBuilder()
             f.append_line(
-                f"{f.extractor(
-                    lambda nonterminal: CFGExtractor(nonterminal, kbnf_string)
-                    )}"
+                f"""{f.extractor(lambda nonterminal:
+                    CFGExtractor(nonterminal, kbnf_string))}"""
             )
         except Exception:
             logger.error(
diff --git a/backends/exllamav2/model.py b/backends/exllamav2/model.py
index 64ed5b9..7a5324f 100644
--- a/backends/exllamav2/model.py
+++ b/backends/exllamav2/model.py
@@ -39,7 +39,6 @@
 
 from backends.exllamav2.grammar import (
     ExLlamaV2Grammar,
-    clear_grammar_func_cache,
 )
 from backends.exllamav2.utils import (
     exllama_disabled_flash_attn,