diff --git a/lib/jkqtplotter/jkqtpbaseplotter.h b/lib/jkqtplotter/jkqtpbaseplotter.h
index 02be0d3d7b..5d3265d6ea 100644
--- a/lib/jkqtplotter/jkqtpbaseplotter.h
+++ b/lib/jkqtplotter/jkqtpbaseplotter.h
@@ -759,7 +759,7 @@ class LIB_EXPORT JKQtBasePlotter: public QObject {
          * will be managed (freed) by this class. If \a datastore_internal is \c false the class will use tha datastore provided
          * in \a datast as an external datastore. You can modify this later by using useInternalDatastore() and useExternalDatastore().
          */
-        JKQtBasePlotter(bool datastore_internal=true, QObject* parent=nullptr, JKQTPdatastore* datast=nullptr);
+        JKQtBasePlotter(bool datastore_internal, QObject* parent=nullptr, JKQTPdatastore* datast=nullptr);
 
         /** \brief class destructor */
         virtual ~JKQtBasePlotter();
diff --git a/lib/jkqtplottertools/jkqtpimagetools.h b/lib/jkqtplottertools/jkqtpimagetools.h
index 18c61a2806..409b092a0e 100644
--- a/lib/jkqtplottertools/jkqtpimagetools.h
+++ b/lib/jkqtplottertools/jkqtpimagetools.h
@@ -527,7 +527,7 @@ QStringList LIB_EXPORT JKQTPimagePlot_getPredefinedPalettes();
 
 
 
-int*  LIB_EXPORT JKQTPimagePlot_getCreateLUT(QList<int *> &lutstore, JKQTPMathImageColorPalette palette);
+LIB_EXPORT int* JKQTPimagePlot_getCreateLUT(QList<int *> &lutstore, JKQTPMathImageColorPalette palette);
 void LIB_EXPORT JKQTPimagePlot_freeLUTs(QList<int *> &lutstore);
 
 
diff --git a/test/test_multiplot/test_multiplot.pro b/test/test_multiplot/test_multiplot.pro
index c48573fe36..2598064980 100644
--- a/test/test_multiplot/test_multiplot.pro
+++ b/test/test_multiplot/test_multiplot.pro
@@ -16,6 +16,7 @@ INCLUDEPATH += ../../lib
 CONFIG (debug, debug|release):LIBS += -L../../lib/debug -ljkqtplotterlib
 CONFIG (release):LIBS += -L../../lib/release -ljkqtplotterlib
 
+win32-msvc*: DEFINES += _USE_MATH_DEFINES
 
 # here you can activate some debug options
 #DEFINES += SHOW_JKQTPLOTTER_DEBUG