diff --git a/pokerth_db.pro b/pokerth_db.pro
index 48a09c15..6757b33a 100644
--- a/pokerth_db.pro
+++ b/pokerth_db.pro
@@ -42,6 +42,7 @@ SOURCES += \
 
 win32{
 	DEFINES += CURL_STATICLIB
+	DEFINES += WIN32
 	DEFINES += _WIN32_WINNT=0x0501
 	DEPENDPATH += src/net/win32/ src/core/win32
 	INCLUDEPATH += ../boost/ ../GnuTLS/include ../curl/include ../zlib
diff --git a/pokerth_game.pro b/pokerth_game.pro
index 4d2f8867..2ec8f03a 100644
--- a/pokerth_game.pro
+++ b/pokerth_game.pro
@@ -295,6 +295,7 @@ TRANSLATIONS = ts/pokerth_af.ts \
 	ts/pokerth_START_HERE.ts
 win32 { 
 	DEFINES += CURL_STATICLIB
+	DEFINES += WIN32
 	DEFINES += _WIN32_WINNT=0x0501
 	DEPENDPATH += src/net/win32/ \
 		src/core/win32
diff --git a/pokerth_lib.pro b/pokerth_lib.pro
index 2b4ebdb3..785d773f 100644
--- a/pokerth_lib.pro
+++ b/pokerth_lib.pro
@@ -225,6 +225,7 @@ official_server{
 
 win32{
 	DEFINES += CURL_STATICLIB
+	DEFINES += WIN32
 	DEFINES += _WIN32_WINNT=0x0501
 	DEPENDPATH += src/net/win32/ src/core/win32
 	INCLUDEPATH += ../boost/ ../GnuTLS/include ../gsasl/include ../curl/include ../zlib ../openssl/include
diff --git a/pokerth_protocol.pro b/pokerth_protocol.pro
index ff55640e..fe90d568 100644
--- a/pokerth_protocol.pro
+++ b/pokerth_protocol.pro
@@ -307,6 +307,7 @@ SOURCES += src/third_party/asn1/ChatCleanerMessage.c \
     src/third_party/asn1/ChatRequestTypePrivate.c
 win32 { 
 	DEFINES += CURL_STATICLIB
+	DEFINES += WIN32
 	DEFINES += _WIN32_WINNT=0x0501
 }
 mac { 
diff --git a/pokerth_server.pro b/pokerth_server.pro
index c33bc5dd..6d717862 100644
--- a/pokerth_server.pro
+++ b/pokerth_server.pro
@@ -114,6 +114,7 @@ SOURCES += \
 
 win32 {
 	DEFINES += CURL_STATICLIB
+	DEFINES += WIN32
 	DEFINES += _WIN32_WINNT=0x0501
 	DEPENDPATH += src/net/win32/ src/core/win32
 	INCLUDEPATH += ../boost/ ../GnuTLS/include ../gsasl/include