diff --git a/slsDetectorGui/include/qDrawPlot.h b/slsDetectorGui/include/qDrawPlot.h
index 1660eec9a..aaf5814eb 100644
--- a/slsDetectorGui/include/qDrawPlot.h
+++ b/slsDetectorGui/include/qDrawPlot.h
@@ -481,7 +481,11 @@ double XYRangeValues[4];
 bool IsXYRange[4];
 
 /** Default timer between plots*/
+#if __GNUC__ > 4 || (__GNUC__  == 4 && __GNUC_MINOR__ > 6)
+static constexpr double PLOT_TIMER_MS = 200;
+#else
 static const double PLOT_TIMER_MS = 200;
+#endif
 /** Specific timer value between plots */
 double timerValue;
 /** every nth frame when to plot */
diff --git a/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DHist.cxx b/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DHist.cxx
index 1bbe9bcaa..fc7e09074 100644
--- a/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DHist.cxx
+++ b/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DHist.cxx
@@ -6,7 +6,7 @@
 
 
 #include <iostream>
-
+#include <cmath>
 #include "SlsQt2DHist.h"
   
 using std::cout;
@@ -125,7 +125,7 @@ double SlsQt2DHist::GetMean(){
 }
 
 double SlsQt2DHist::SetMinimumToFirstGreaterThanZero(){
-  z_min=abs(z_max)+1;
+  z_min=fabs(z_max)+1;
   for(int i=0;i<nb;i++){
     if(data[i]>0 && data[i]<z_min) z_min=data[i];
   }
diff --git a/slsDetectorGui/src/qScanWidget.cpp b/slsDetectorGui/src/qScanWidget.cpp
index 0c7b73dea..df21eb056 100644
--- a/slsDetectorGui/src/qScanWidget.cpp
+++ b/slsDetectorGui/src/qScanWidget.cpp
@@ -138,7 +138,7 @@ void qScanWidget::SetupWidgetWindow(){
 	btnCustom = new QPushButton("Delete  ",widgetCustom);
 	btnCustom->setIcon(QIcon( ":/icons/images/close.png" ));
 	comboCustom->setEditable(true);
-	comboCustom->setCompleter(false);
+	comboCustom->setCompleter(NULL);
 	comboCustom->setValidator(new QDoubleValidator(comboCustom));
 	comboCustom->setToolTip(customTip);
 	btnCustom->setSizePolicy(QSizePolicy::Fixed,QSizePolicy::Fixed);
diff --git a/slsDetectorGui/src/qTabActions.cpp b/slsDetectorGui/src/qTabActions.cpp
index c53c93499..bbaf462fa 100644
--- a/slsDetectorGui/src/qTabActions.cpp
+++ b/slsDetectorGui/src/qTabActions.cpp
@@ -257,7 +257,8 @@ void qTabActions::CreatePositionsWidget(){
 	layout->addWidget(lblPosList,0,4);
 	comboPos = new QComboBox(this);
 	comboPos->setEditable(true);
-	comboPos->setCompleter(false);
+//	comboPos->setCompleter(false);
+	comboPos->setCompleter(NULL);
 	normal = comboPos->palette();
 	comboPos->setEnabled(false);
 	QDoubleValidator *validate = new QDoubleValidator(comboPos);