diff --git a/src/http_loop/http_loop_steps.c b/src/http_loop/http_loop_steps.c
index c3ff36a..99c5cce 100644
--- a/src/http_loop/http_loop_steps.c
+++ b/src/http_loop/http_loop_steps.c
@@ -4,6 +4,18 @@
 #include "http_loop.h"
 #include "lander.h"
 
+// Just a naive pow implementation; might improve later
+static uint64_t ipow(uint64_t base, uint64_t power) {
+  uint64_t res = 1;
+
+  while (power > 0) {
+    res *= base;
+    power--;
+  }
+
+  return res;
+}
+
 /*
  * Converts a string to a number, returning true if the string contained a valid
  * positive number.
@@ -18,7 +30,7 @@ static bool string_to_num(size_t *res, const char *s, size_t len) {
       return false;
     }
 
-    *res += val * (int)pow(10, (len - 1) - i);
+    *res += (uint64_t)val * ipow(10, (len - 1) - i);
   }
 
   return true;