diff --git a/lexer.h b/lexer.h
index 3be4c6e..82aa046 100644
--- a/lexer.h
+++ b/lexer.h
@@ -111,7 +111,7 @@ typedef struct {
     size_t  line;
     size_t  sline; /* line at the start of a token */
 
-    char    peek[256];
+    int     peek[256];
     size_t  peekpos;
 
     bool    eof;