diff --git a/adb/adb.c b/adb/adb.c
index cf8e3c4..68a6026 100644
--- a/adb/adb.c
+++ b/adb/adb.c
@@ -947,7 +947,7 @@
     return INSTALL_STATUS_INTERNAL_ERROR;
 }
 
-#ifdef HAVE_WIN32_PROC
+#if defined(_WIN32)
 static BOOL WINAPI ctrlc_handler(DWORD type)
 {
     exit(STATUS_CONTROL_C_EXIT);
@@ -962,7 +962,7 @@
 
 void start_logging(void)
 {
-#ifdef HAVE_WIN32_PROC
+#if defined(_WIN32)
     char    temp[ MAX_PATH ];
     FILE*   fnul;
     FILE*   flog;
@@ -1070,7 +1070,7 @@
 
 int launch_server(int server_port)
 {
-#ifdef HAVE_WIN32_PROC
+#if defined(_WIN32)
     /* we need to start the server in the background                    */
     /* we create a PIPE that will be used to wait for the server's "OK" */
     /* message since the pipe handles must be inheritable, we use a     */
@@ -1169,7 +1169,7 @@
             return -1;
         }
     }
-#elif defined(HAVE_FORKEXEC)
+#else /* !defined(_WIN32) */
     char    path[PATH_MAX];
     int     fd[2];
 
@@ -1220,12 +1220,10 @@
 
         setsid();
     }
-#else
-#error "cannot implement background server start on this platform"
-#endif
+#endif /* !defined(_WIN32) */
     return 0;
 }
-#endif
+#endif /* ADB_HOST */
 
 /* Constructs a local name of form tcp:port.
  * target_str points to the target string, it's content will be overwritten.
@@ -1307,9 +1305,9 @@
 #endif
 
     atexit(adb_cleanup);
-#ifdef HAVE_WIN32_PROC
+#if defined(_WIN32)
     SetConsoleCtrlHandler( ctrlc_handler, TRUE );
-#elif defined(HAVE_FORKEXEC)
+#else
     // No SIGCHLD. Let the service subproc handle its children.
     signal(SIGPIPE, SIG_IGN);
 #endif
@@ -1425,10 +1423,10 @@
     if (is_daemon)
     {
         // inform our parent that we are up and running.
-#ifdef HAVE_WIN32_PROC
+#if defined(_WIN32)
         DWORD  count;
         WriteFile( GetStdHandle( STD_OUTPUT_HANDLE ), "OK\n", 3, &count, NULL );
-#elif defined(HAVE_FORKEXEC)
+#else
         fprintf(stderr, "OK\n");
 #endif
         start_logging();
diff --git a/adb/commandline.c b/adb/commandline.c
index 05b4ef6..eea882d 100644
--- a/adb/commandline.c
+++ b/adb/commandline.c
@@ -729,7 +729,7 @@
  */
 int ppp(int argc, char **argv)
 {
-#ifdef HAVE_WIN32_PROC
+#if defined(_WIN32)
     fprintf(stderr, "error: adb %s not implemented on Win32\n", argv[0]);
     return -1;
 #else
@@ -792,7 +792,7 @@
         adb_close(fd);
         return 0;
     }
-#endif /* !HAVE_WIN32_PROC */
+#endif /* !defined(_WIN32) */
 }
 
 static int send_shellcommand(transport_type transport, char* serial, char* buf)
diff --git a/adb/services.c b/adb/services.c
index e61371a..bcfc163 100644
--- a/adb/services.c
+++ b/adb/services.c
@@ -202,10 +202,10 @@
 static int create_subproc_pty(const char *cmd, const char *arg0, const char *arg1, pid_t *pid)
 {
     D("create_subproc_pty(cmd=%s, arg0=%s, arg1=%s)\n", cmd, arg0, arg1);
-#ifdef HAVE_WIN32_PROC
+#if defined(_WIN32)
     fprintf(stderr, "error: create_subproc_pty not implemented on Win32 (%s %s %s)\n", cmd, arg0, arg1);
     return -1;
-#else /* !HAVE_WIN32_PROC */
+#else
     int ptm;
 
     ptm = unix_open("/dev/ptmx", O_RDWR | O_CLOEXEC); // | O_NOCTTY);
@@ -251,16 +251,16 @@
     } else {
         return ptm;
     }
-#endif /* !HAVE_WIN32_PROC */
+#endif /* !defined(_WIN32) */
 }
 
 static int create_subproc_raw(const char *cmd, const char *arg0, const char *arg1, pid_t *pid)
 {
     D("create_subproc_raw(cmd=%s, arg0=%s, arg1=%s)\n", cmd, arg0, arg1);
-#ifdef HAVE_WIN32_PROC
+#if defined(_WIN32)
     fprintf(stderr, "error: create_subproc_raw not implemented on Win32 (%s %s %s)\n", cmd, arg0, arg1);
     return -1;
-#else /* !HAVE_WIN32_PROC */
+#else
 
     // 0 is parent socket, 1 is child socket
     int sv[2];
@@ -295,7 +295,7 @@
         adb_close(sv[1]);
         return sv[0];
     }
-#endif /* !HAVE_WIN32_PROC */
+#endif /* !defined(_WIN32) */
 }
 #endif  /* !ABD_HOST */