diff --git a/src/tinyexpr.cpp b/src/tinyexpr.cpp
index 8413d8530..4de6453f2 100644
--- a/src/tinyexpr.cpp
+++ b/src/tinyexpr.cpp
@@ -251,7 +251,7 @@ static void next_token(state *s) {
 
         /* Try reading a number. */
         if ((s->next[0] >= '0' && s->next[0] <= '9') || s->next[0] == '.') {
-            s->value = wcstod_l(s->next, const_cast<wchar_t **>(&s->next), fish_c_locale());
+            s->value = fish_wcstod(s->next, const_cast<wchar_t **>(&s->next));
             s->type = TOK_NUMBER;
         } else {
             /* Look for a function call. */