diff --git a/Applications/FileIO/XmlIO/Qt/XmlLutReader.h b/Applications/FileIO/XmlIO/Qt/XmlLutReader.h
index b861efffd1e1482d34d817cad7d8354ec4a0cc01..4cbd0e74721d318bd5bc33b986537b5572258d68 100644
--- a/Applications/FileIO/XmlIO/Qt/XmlLutReader.h
+++ b/Applications/FileIO/XmlIO/Qt/XmlLutReader.h
@@ -36,7 +36,8 @@ public:
         QFile file(fileName);
         if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
         {
-            ERR("XmlLutReader::readFromFile(): Can't open xml-file %s.", fileName.data());
+            ERR("XmlLutReader::readFromFile(): Can't open xml-file {s}.",
+                fileName.toStdString());
             return false;
         }
 
diff --git a/Applications/FileIO/XmlIO/Qt/XmlPrjInterface.cpp b/Applications/FileIO/XmlIO/Qt/XmlPrjInterface.cpp
index d2d73642c0b68a904bc4929c2aa163f9b10f92c6..1c6817bf9c3bc65512beeeb9b5e2fbedbb3a259f 100644
--- a/Applications/FileIO/XmlIO/Qt/XmlPrjInterface.cpp
+++ b/Applications/FileIO/XmlIO/Qt/XmlPrjInterface.cpp
@@ -119,8 +119,8 @@ int XmlPrjInterface::readFile(const QString& fileName)
                 }
                 if (meshes_node.nodeName() != "mesh")
                 {
-                    ERR("Expected an XML element node named 'mesh' got '%s'.",
-                        meshes_node.nodeName().data())
+                    ERR("Expected an XML element node named 'mesh' got '{s}'.",
+                        meshes_node.nodeName().toStdString());
                     return 0;
                 }
                 if (meshes_node.childNodes().count() != 1)
diff --git a/GeoLib/SensorData.cpp b/GeoLib/SensorData.cpp
index 693e26ecbe42fe5744f4ba08e74e20cc00f06fda..9604040cfa499e302ae19b0c99865bd993abd4c7 100644
--- a/GeoLib/SensorData.cpp
+++ b/GeoLib/SensorData.cpp
@@ -85,8 +85,8 @@ const std::vector<float>* SensorData::getTimeSeries(SensorDataType time_series_n
             return _data_vecs[i];
         }
     }
-    ERR("Error in SensorData::getTimeSeries() - Time series '%d' not found.",
-        time_series_name);
+    ERR("Error in SensorData::getTimeSeries() - Time series '{s}' not found.",
+        convertSensorDataType2String(time_series_name));
     return nullptr;
 }