diff --git a/serversdkint.pri b/serversdkint.pri
index bec8e78..9935f31 100644
--- a/serversdkint.pri
+++ b/serversdkint.pri
@@ -29,6 +29,9 @@ QT += network sql
 CONFIG += c++14
 INCLUDEPATH += $$PWD/src/
 DEPENDPATH += $$PWD/src/serversdk
+# enable zlib compression on linux
+unix: DEFINES += USE_ZLIB
+
 
 win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$SDKDIR/release/libserversdk.a
 else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$SDKDIR/debug/libserversdk.a
diff --git a/src/serversdk/serversdk.pro b/src/serversdk/serversdk.pro
index 432bb48..78100d2 100644
--- a/src/serversdk/serversdk.pro
+++ b/src/serversdk/serversdk.pro
@@ -7,6 +7,8 @@ CONFIG += c++14
 
 INCLUDEPATH += $$PWD
 
+unix: DEFINES += USE_ZLIB
+
 SOURCES += \
     core.cpp \
     databasemanager.cpp \
@@ -30,3 +32,4 @@ HEADERS += \
     utils.h \
     soaprequest.h \
     databasetable.h
+
diff --git a/src/serversdk/utils.cpp b/src/serversdk/utils.cpp
index 007c17b..0432ed7 100644
--- a/src/serversdk/utils.cpp
+++ b/src/serversdk/utils.cpp
@@ -3,11 +3,14 @@
 #include <QFileInfo>
 #include <QDir>
 
+#ifdef USE_ZLIB
 #include <zlib.h> // gzip decompress
-
+#endif
 
 namespace serversdk {
 
+
+#ifdef USE_ZLIB
 /**
  * @brief Decompress gzip data
  * @param compressed gzip data
@@ -74,6 +77,7 @@ QByteArray Utils::decompress(const QByteArray &compressed)
 
     return result;
 }
+#endif
 
 
 } // namespace core
diff --git a/src/serversdk/utils.h b/src/serversdk/utils.h
index 06d5a93..033b29a 100644
--- a/src/serversdk/utils.h
+++ b/src/serversdk/utils.h
@@ -9,7 +9,10 @@ namespace serversdk {
 class Utils
 {
 public:
+#ifdef USE_ZLIB
     static QByteArray decompress(const QByteArray &compressed);
+#endif
+
 };
 
 } // namespace serversdk
diff --git a/test/auto/auto.pro b/test/auto/auto.pro
index 33c4aed..7f8f624 100644
--- a/test/auto/auto.pro
+++ b/test/auto/auto.pro
@@ -9,4 +9,5 @@ SUBDIRS += \
     database/tst_postgresql.pro \
     database/tst_databasetable.pro \
     database/tst_databaseutils.pro \
-    tst_utils
+
+unix: SUBDIRS += tst_utils