diff --git a/src/drivers/usr/src/MuFactors.cpp b/src/drivers/usr/src/MuFactors.cpp
index 8f130ae43..166151877 100755
--- a/src/drivers/usr/src/MuFactors.cpp
+++ b/src/drivers/usr/src/MuFactors.cpp
@@ -48,7 +48,7 @@ void MuFactors::read(const std::string& datadir, const std::string& trackname)
         mSect.push_back(sect);
         mMinMuFactor = 1.0;
         printMuFactors();
-        std::cout << "readMuFactors(): no data file found, using default factor" << std::endl;
+        std::cout << "readMuFactors(): data file " << datFile << " not found, using default factor" << std::endl;
     }
 }
 
diff --git a/src/drivers/usr/src/PathMargins.cpp b/src/drivers/usr/src/PathMargins.cpp
index ca9bef973..9689b3b2b 100755
--- a/src/drivers/usr/src/PathMargins.cpp
+++ b/src/drivers/usr/src/PathMargins.cpp
@@ -45,7 +45,7 @@ void PathMargins::read(const std::string &datafile)
         sect.left = 1.2;
         sect.right = 1.2;
         mPathMargin.push_back(sect);
-        std::cout << "readPathMargins(): no data file found, using default margins" << std::endl;
+        std::cout << "readPathMargins(): data file " << datafile << " not found, using default margins" << std::endl;
     }
 }