diff --git a/examples/hello/hdf5Writer/helloHDF5Writer.cpp b/examples/hello/hdf5Writer/helloHDF5Writer.cpp
index 863250ee484254a78802ff770490352560ee5180..f67e27c10a7a8c6c49d7f64a80c35cb638a942fc 100644
--- a/examples/hello/hdf5Writer/helloHDF5Writer.cpp
+++ b/examples/hello/hdf5Writer/helloHDF5Writer.cpp
@@ -45,7 +45,7 @@ int main(int argc, char *argv[])
             "bpFloats", {size * Nx}, {rank * Nx}, {Nx}, adios2::ConstantDims);
 
         /** Engine derived class, spawned to start IO operations */
-        auto hdf5Writer = hdf5IO.Open("myVector.bp", adios2::OpenMode::Write);
+        auto hdf5Writer = hdf5IO.Open("myVector.h5", adios2::OpenMode::Write);
 
         if (!hdf5Writer)
         {
diff --git a/examples/hello/hdf5Writer/helloHDF5Writer_nompi.cpp b/examples/hello/hdf5Writer/helloHDF5Writer_nompi.cpp
index de584418d58ca9000f7d6c4c12230f39c0266c91..1890da58acad3c2cbaca23d823669f404bd1267e 100644
--- a/examples/hello/hdf5Writer/helloHDF5Writer_nompi.cpp
+++ b/examples/hello/hdf5Writer/helloHDF5Writer_nompi.cpp
@@ -38,7 +38,7 @@ int main(int argc, char *argv[])
             "bpFloats", {}, {}, {Nx}, adios2::ConstantDims);
 
         /** Engine derived class, spawned to start IO operations */
-        auto hdf5Writer = hdf5IO.Open("myVector.bp", adios2::OpenMode::Write);
+        auto hdf5Writer = hdf5IO.Open("myVector.h5", adios2::OpenMode::Write);
 
         if (!hdf5Writer)
         {