1 files changed, 2 insertions, 0 deletions
diff --git a/src/tokenizer.c b/src/tokenizer.c
index c59f80c..d873b0e 100644
--- a/src/tokenizer.c
+++ b/src/tokenizer.c
@@ -663,5 +663,7 @@ int tokenizer_get_error_index(Tokenizer *self) {
 }
 
 int tokenizer_get_code_reference_index(Tokenizer *self, const char *ref) {
+    if(!ref)
+        return -1;
     return ref - self->code.data;
 }