diff --git a/src/normalize.h b/src/normalize.h
index 70c2643d..098f283b 100644
--- a/src/normalize.h
+++ b/src/normalize.h
@@ -31,8 +31,6 @@ extern "C" {
 
 #include "constants.h"
 #include "klib/khash.h"
-#include "numex.h"
-#include "scanner.h"
 #include "string_utils.h"
 #include "utf8proc/utf8proc.h"
 #include "unicode_scripts.h"
diff --git a/src/unicode_scripts.c b/src/unicode_scripts.c
index 69c1e719..ddbba825 100644
--- a/src/unicode_scripts.c
+++ b/src/unicode_scripts.c
@@ -26,7 +26,7 @@ string_script_t get_string_script(char *str, size_t len) {
     bool is_ascii = true;
 
     while (idx < len) {
-        ssize_t char_len = utf8proc_iterate(ptr, -1, &ch);
+        ssize_t char_len = utf8proc_iterate(ptr, len, &ch);
 
         if (ch == 0) break;