diff --git a/src/ctbin/ctbin.cpp b/src/ctbin/ctbin.cpp
index 6790f96..15bdecb 100644
--- a/src/ctbin/ctbin.cpp
+++ b/src/ctbin/ctbin.cpp
@@ -409,7 +409,7 @@ void ctbin::get_parameters(void)
         }
         
         // ... otherwise try to open as XML file
-        catch (GException::fits_open_error) {
+        catch (GException::fits_open_error &e) {
 
             // Load observations from XML file
             m_obs.load(m_evfile);
diff --git a/src/ctlike/ctlike.cpp b/src/ctlike/ctlike.cpp
index 0526b2c..82d0274 100644
--- a/src/ctlike/ctlike.cpp
+++ b/src/ctlike/ctlike.cpp
@@ -367,7 +367,7 @@ void ctlike::get_parameters(void)
         }
 
         // ... otherwise try to open as XML file
-        catch (GException::fits_open_error) {
+        catch (GException::fits_open_error &e) {
 
             // Load observations from XML file
             m_obs.load(filename);
diff --git a/src/ctselect/ctselect.cpp b/src/ctselect/ctselect.cpp
index ccd8e82..5c06db7 100644
--- a/src/ctselect/ctselect.cpp
+++ b/src/ctselect/ctselect.cpp
@@ -414,7 +414,7 @@ void ctselect::get_parameters(void)
         }
         
         // ... otherwise try to open as XML file
-        catch (GException::fits_open_error) {
+        catch (GException::fits_open_error &e) {
 
             // Load observations from XML file
             m_obs.load(m_infile);