diff --git a/src/runtime/stack.c b/src/runtime/stack.c
index 0a0858d0..ec4d8476 100644
--- a/src/runtime/stack.c
+++ b/src/runtime/stack.c
@@ -2,7 +2,6 @@
 #include <string.h>
 
 typedef int state_id;
-static const state_id ts_lex_state_error = -1;
 
 typedef struct {
     size_t size;