diff --git a/quickjs.c b/quickjs.c
index 54c0608..199f282 100644
--- a/quickjs.c
+++ b/quickjs.c
@@ -9987,12 +9987,13 @@ static inline int to_digit(int c)
 }
 
 /* XXX: remove */
-static double js_strtod(const char *p, int radix, BOOL is_float)
+static double js_strtod(const char *str, int radix, BOOL is_float)
 {
     double d;
     int c;
 
     if (!is_float || radix != 10) {
+        const char *p = str;
         uint64_t n_max, n;
         int int_exp, is_neg;
 
@@ -10019,6 +10020,8 @@ static double js_strtod(const char *p, int radix, BOOL is_float)
             if (n <= n_max) {
                 n = n * radix + c;
             } else {
+                if (radix == 10)
+                    goto strtod_case;
                 int_exp++;
             }
             p++;
@@ -10030,7 +10033,8 @@ static double js_strtod(const char *p, int radix, BOOL is_float)
         if (is_neg)
             d = -d;
     } else {
-        d = strtod(p, NULL);
+    strtod_case:
+        d = strtod(str, NULL);
     }
     return d;
 }
diff --git a/tests/test_language.js b/tests/test_language.js
index 746fa0e..b6ce4e4 100644
--- a/tests/test_language.js
+++ b/tests/test_language.js
@@ -120,6 +120,7 @@ function test_cvt()
     assert((Infinity >>> 0) === 0);
     assert(((-Infinity) >>> 0) === 0);
     assert(((4294967296 * 3 - 4) >>> 0) === (4294967296 - 4));
+    assert((19686109595169230000).toString() === "19686109595169230000");
 }
 
 function test_eq()