diff --git a/tunsafe_types.h b/tunsafe_types.h
index 7bdc600..d4dc203 100644
--- a/tunsafe_types.h
+++ b/tunsafe_types.h
@@ -7,7 +7,6 @@
 #include "build_config.h"
 #include "tunsafe_config.h"
 
-
 typedef uint8_t byte;
 typedef uint8_t uint8;
 typedef uint16_t uint16;
@@ -17,8 +16,7 @@ typedef int64_t int64;
 typedef int8_t int8;
 typedef int16_t int16;
 typedef int32_t int32;
-
-typedef unsigned int in_addr_t;
+typedef unsigned int uint;
 
 #define CTASTR2(pre,post) pre ## post
 #define CTASTR(pre,post) CTASTR2(pre,post)
diff --git a/tunsafe_win32.cpp b/tunsafe_win32.cpp
index 583c9ae..7d37292 100644
--- a/tunsafe_win32.cpp
+++ b/tunsafe_win32.cpp
@@ -123,7 +123,7 @@ void StopTunsafeBackend(UpdateIconWhy why) {
   }
 }
 
-const char *print_ip(char buf[kSizeOfAddress], in_addr_t ip) {
+const char *print_ip(char buf[kSizeOfAddress], uint32 ip) {
   snprintf(buf, kSizeOfAddress, "%d.%d.%d.%d", (ip >> 24) & 0xff, (ip >> 16) & 0xff, (ip >> 8) & 0xff, (ip >> 0) & 0xff);
   return buf;
 }
diff --git a/util.cpp b/util.cpp
index 6921c64..11add66 100644
--- a/util.cpp
+++ b/util.cpp
@@ -100,8 +100,8 @@ static const unsigned char d[] = {
   66,66,66,66,66,66
 };
 
-bool base64_decode(uint8 *in, size_t inLen, uint8 *out, size_t *outLen) {
-  uint8 *end = in + inLen;
+bool base64_decode(const uint8 *in, size_t inLen, uint8 *out, size_t *outLen) {
+  const uint8 *end = in + inLen;
   uint8 iter = 0;
   uint32_t buf = 0;
   size_t len = 0;
@@ -168,10 +168,6 @@ int RunCommand(const char *fmt, ...) {
         tmp += buf;
       } else if (c == '%') {
         tmp += '%';
-      } else if (c == 'A') {
-        struct in_addr in;
-        in.s_addr = htonl(va_arg(va, in_addr_t));
-        tmp += inet_ntoa(in);
       }
     } else if (c == ' ' || c == 0) {
 ZERO:
diff --git a/util.h b/util.h
index 95efef9..3d1ffd3 100644
--- a/util.h
+++ b/util.h
@@ -4,7 +4,7 @@
 #include "tunsafe_types.h"
 
 char *base64_encode(const uint8 *input, size_t length, char *output, size_t output_size, size_t *actual_size);
-bool base64_decode(uint8 *in, size_t inLen, uint8 *out, size_t *outLen);
+bool base64_decode(const uint8 *in, size_t inLen, uint8 *out, size_t *outLen);
 bool IsOnlyZeros(const uint8 *data, size_t data_size);
 
 int RunCommand(const char *fmt, ...);