diff --git a/src/shared/string.c b/src/shared/string.c
index af3d313..56a6824 100644
--- a/src/shared/string.c
+++ b/src/shared/string.c
@@ -83,55 +83,25 @@ void itoa64(i64 value, char *buffer) {
 }
 
 void uitoa64(u64 value, char *buffer) {
-    char *p = buffer;
+    char tmp[20];
+    int i = 0;
 
     if (value == 0) {
-        *p++ = '0';
-        *p = '\0';
+        buffer[0] = '0';
+        buffer[1] = '\0';
         return;
     }
 
-    static const u64 powers[] = {
-        10000000000000000000ULL,
-        1000000000000000000ULL,
-        100000000000000000ULL,
-        10000000000000000ULL,
-        1000000000000000ULL,
-        100000000000000ULL,
-        10000000000000ULL,
-        1000000000000ULL,
-        100000000000ULL,
-        10000000000ULL,
-        1000000000ULL,
-        100000000ULL,
-        10000000ULL,
-        1000000ULL,
-        100000ULL,
-        10000ULL,
-        1000ULL,
-        100ULL,
-        10ULL,
-        1ULL
-    };
-
-    bool started = false;
-
-    for (int i = 0; i < 20; i++) {
-        u64 power = powers[i];
-        u32 digit = 0;
-
-        while (value >= power) {
-            value -= power;
-            digit++;
-        }
-
-        if (digit || started) {
-            *p++ = '0' + digit;
-            started = true;
-        }
+    while (value > 0) {
+        tmp[i++] = '0' + (value % 10);
+        value /= 10;
     }
 
-    *p = '\0';
+    for (int j = 0; j < i; j++) {
+        buffer[j] = tmp[i - j - 1];
+    }
+
+    buffer[i] = '\0';
 }
 
 void uitoa64_hex(u64 value, char *buffer) {