diff --git a/scripts/obsutils.py b/scripts/obsutils.py
index d9cdca0..bb3d10f 100755
--- a/scripts/obsutils.py
+++ b/scripts/obsutils.py
@@ -289,7 +289,7 @@ def set(pntdir, tstart=0.0, duration=1800.0, deadc=0.95, \
     # Set calibration database
     db = gammalib.GCaldb()
     if (gammalib.dir_exists(caldb)):
-        db.dir(caldb)
+        db.rootdir(caldb)
     else:
         db.open("cta", caldb)
     
diff --git a/src/ctlike/ctlike.cpp b/src/ctlike/ctlike.cpp
index d05699a..1dd4f39 100644
--- a/src/ctlike/ctlike.cpp
+++ b/src/ctlike/ctlike.cpp
@@ -367,7 +367,7 @@ void ctlike::get_parameters(void)
             // the mission being "cta"
             GCaldb caldb;
             if (gammalib::dir_exists(m_caldb)) {
-                caldb.dir(m_caldb);
+                caldb.rootdir(m_caldb);
             }
             else {
                 caldb.open("cta", m_caldb);
diff --git a/src/ctmodel/ctmodel.cpp b/src/ctmodel/ctmodel.cpp
index c02e0d8..32b7176 100644
--- a/src/ctmodel/ctmodel.cpp
+++ b/src/ctmodel/ctmodel.cpp
@@ -588,7 +588,7 @@ void ctmodel::setup_obs(void)
                 // the mission being "cta"
                 GCaldb caldb;
                 if (gammalib::dir_exists(m_caldb)) {
-                    caldb.dir(m_caldb);
+                    caldb.rootdir(m_caldb);
                 }
                 else {
                     caldb.open("cta", m_caldb);
diff --git a/src/ctobssim/ctobssim.cpp b/src/ctobssim/ctobssim.cpp
index a65f1ad..82d49dd 100644
--- a/src/ctobssim/ctobssim.cpp
+++ b/src/ctobssim/ctobssim.cpp
@@ -438,7 +438,7 @@ void ctobssim::get_parameters(void)
         // "cta"
         GCaldb caldb;
         if (gammalib::dir_exists(m_caldb)) {
-            caldb.dir(m_caldb);
+            caldb.rootdir(m_caldb);
         }
         else {
             caldb.open("cta", m_caldb);