diff --git a/src/IO/HDF5/HDF5IOHandler.cpp b/src/IO/HDF5/HDF5IOHandler.cpp
index 8daa3b3c6a..02ddf2a228 100644
--- a/src/IO/HDF5/HDF5IOHandler.cpp
+++ b/src/IO/HDF5/HDF5IOHandler.cpp
@@ -462,7 +462,7 @@ void HDF5IOHandlerImpl::createDataset(
     if (parameters.joinedDimension.has_value())
     {
         error::throwOperationUnsupportedInBackend(
-            "ADIOS1", "Joined Arrays currently only supported in ADIOS2");
+            "HDF5", "Joined Arrays currently only supported in ADIOS2");
     }
 
     if (!writable->written)
diff --git a/src/IO/JSON/JSONIOHandlerImpl.cpp b/src/IO/JSON/JSONIOHandlerImpl.cpp
index 36d153de6a..412dc32e8d 100644
--- a/src/IO/JSON/JSONIOHandlerImpl.cpp
+++ b/src/IO/JSON/JSONIOHandlerImpl.cpp
@@ -263,7 +263,7 @@ void JSONIOHandlerImpl::createDataset(
     if (parameter.joinedDimension.has_value())
     {
         error::throwOperationUnsupportedInBackend(
-            "ADIOS1", "Joined Arrays currently only supported in ADIOS2");
+            "JSON", "Joined Arrays currently only supported in ADIOS2");
     }
 
     if (!writable->written)