diff --git a/.github/workflows/doxygen-gh-pages.yml b/.github/workflows/doxygen-gh-pages.yml
index f53f24e9..1b62364d 100644
--- a/.github/workflows/doxygen-gh-pages.yml
+++ b/.github/workflows/doxygen-gh-pages.yml
@@ -2,8 +2,6 @@ name: Doxygen GitHub Pages Deploy Action
 
 on:
   push:
-    branches: [ "*" ]
-  pull_request:
     branches: [ "main" ]
 
 jobs:
diff --git a/src/Calibration.cc b/src/Calibration.cc
index 8bee5260..6e5c58ce 100644
--- a/src/Calibration.cc
+++ b/src/Calibration.cc
@@ -624,7 +624,7 @@ std::string ISSCalibration::CaenType( unsigned int mod, unsigned int chan ){
 
 	}
 
-	return 0;
+	return "";
 
 }
 
@@ -714,7 +714,7 @@ std::string ISSCalibration::MesytecType( unsigned int mod, unsigned int chan ){
 
 	}
 
-	return 0;
+	return "";
 
 }