diff --git a/map65/CMakeLists.txt b/map65/CMakeLists.txt
index f5fd47e03..4c8107eee 100644
--- a/map65/CMakeLists.txt
+++ b/map65/CMakeLists.txt
@@ -27,11 +27,6 @@ if (WIN32)
   set (map65_CXXSRCS ${map65_CXXSRCS} killbyname.cpp)
 endif (WIN32)
 
-set (map65_CSRCS
-  paInputDevice.c
-  pa_get_device_info.c
-)
-
 set (map65_UISRCS
   about.ui
   astro.ui
diff --git a/map65/getfile.cpp b/map65/getfile.cpp
index 0797ad7bf..39e7257aa 100644
--- a/map65/getfile.cpp
+++ b/map65/getfile.cpp
@@ -22,8 +22,9 @@ void getfile(QString fname, bool xpol, int dbDgrd)
   FILE* fp=fopen(name,"rb");
 
   if(fp != NULL) {
-    (void)fread(&datcom_.fcenter,sizeof(datcom_.fcenter),1,fp);
-    (void)fread(id,2,npts,fp);
+    auto n = fread(&datcom_.fcenter,sizeof(datcom_.fcenter),1,fp);
+    n = fread(id,2,npts,fp);
+    Q_UNUSED (n);
     int j=0;
 
     if(dbDgrd<0) {
diff --git a/map65/plotter.cpp b/map65/plotter.cpp
index 9527a2457..245264dd3 100644
--- a/map65/plotter.cpp
+++ b/map65/plotter.cpp
@@ -273,7 +273,7 @@ void CPlotter::UTCstr()
     ihr=imin/60;
     imin=imin % 60;
   }
-  sprintf(m_sutc,"%2.2d:%2.2d",ihr,imin);
+  m_sutc = QString {"%1:%2"}.arg (ihr, 2).arg (imin, 2);
 }
 
 void CPlotter::DrawOverlay()                                 //DrawOverlay()
diff --git a/map65/plotter.h b/map65/plotter.h
index 7169236c9..2d372c6c6 100644
--- a/map65/plotter.h
+++ b/map65/plotter.h
@@ -115,7 +115,7 @@ private:
   qint32  m_FreqUnits;
   qint32  m_hdivs;
   bool    m_dataFromDisk;
-  char    m_sutc[5];
+  QString m_sutc;
   qint32  m_line;
   qint32  m_hist1[256];
   qint32  m_hist2[256];