diff --git a/include/libimobiledevice-glue/socket.h b/include/libimobiledevice-glue/socket.h
index 53f58b8..f3cc6c6 100644
--- a/include/libimobiledevice-glue/socket.h
+++ b/include/libimobiledevice-glue/socket.h
@@ -32,7 +32,7 @@ enum fd_mode {
 };
 typedef enum fd_mode fd_mode;
 
-#ifdef WIN32
+#ifdef _WIN32
 #include <winsock2.h>
 #define SHUT_RD SD_READ
 #define SHUT_WR SD_WRITE
@@ -41,7 +41,7 @@ typedef enum fd_mode fd_mode;
 #include <sys/socket.h>
 #endif
 
-#ifndef WIN32
+#ifndef _WIN32
 int socket_create_unix(const char *filename);
 int socket_connect_unix(const char *filename);
 #endif
diff --git a/include/libimobiledevice-glue/thread.h b/include/libimobiledevice-glue/thread.h
index 2aadc6e..b5c2ac1 100644
--- a/include/libimobiledevice-glue/thread.h
+++ b/include/libimobiledevice-glue/thread.h
@@ -24,7 +24,7 @@
 
 #include <stddef.h>
 
-#ifdef WIN32
+#ifdef _WIN32
 #include <windows.h>
 typedef HANDLE THREAD_T;
 typedef CRITICAL_SECTION mutex_t;
@@ -61,7 +61,7 @@ int thread_alive(THREAD_T thread);
 
 int thread_cancel(THREAD_T thread);
 
-#ifdef WIN32
+#ifdef _WIN32
 #undef HAVE_THREAD_CLEANUP
 #else
 #ifdef HAVE_PTHREAD_CANCEL
diff --git a/include/libimobiledevice-glue/utils.h b/include/libimobiledevice-glue/utils.h
index 1a21871..2421270 100644
--- a/include/libimobiledevice-glue/utils.h
+++ b/include/libimobiledevice-glue/utils.h
@@ -29,7 +29,7 @@
 #include <config.h>
 #endif
 
-#ifdef WIN32
+#ifdef _WIN32
 #include <windows.h>
 #endif