diff --git a/src/distributed_io.c b/src/distributed_io.c
index c57617760a1340608f5a069cf98fa9bec8a001ca..84a1002329edb09c11a6de3b9b72e8a03554925f 100644
--- a/src/distributed_io.c
+++ b/src/distributed_io.c
@@ -404,7 +404,7 @@ void write_output_distributed(struct engine* e,
                      swift_type_count);
   io_write_attribute_i(h_grp, "NumFilesPerSnapshot", numFiles);
   io_write_attribute_i(h_grp, "ThisFile", mpi_rank);
-  io_write_attribute_s(h_grp, "OutputType", "Snapshot");
+  io_write_attribute_s(h_grp, "OutputType", "FullVolume");
   io_write_attribute_s(h_grp, "SelectOutput", current_selection_name);
 
   /* Close header */
diff --git a/src/parallel_io.c b/src/parallel_io.c
index 9f333085c5070eadea7829f64b015bbd1bdc676f..308486da23ff6c9e9f0e89aa021578e756b8f9c8 100644
--- a/src/parallel_io.c
+++ b/src/parallel_io.c
@@ -1152,7 +1152,7 @@ void prepare_file(struct engine* e, const char* fileName,
                      swift_type_count);
   io_write_attribute(h_grp, "NumFilesPerSnapshot", INT, &numFiles, 1);
   io_write_attribute_i(h_grp, "ThisFile", 0);
-  io_write_attribute_s(h_grp, "OutputType", "Snapshot");
+  io_write_attribute_s(h_grp, "OutputType", "FullVolume");
   io_write_attribute_s(h_grp, "SelectOutput", current_selection_name);
 
   /* Close header */
diff --git a/src/serial_io.c b/src/serial_io.c
index 2f1c5ad8b24e33d10610ded67f7be11dff83df4f..9dd51f952b12bcf570cdea1563d6bd3c6f3d67d4 100644
--- a/src/serial_io.c
+++ b/src/serial_io.c
@@ -1020,7 +1020,7 @@ void write_output_serial(struct engine* e,
                        swift_type_count);
     io_write_attribute(h_grp, "NumFilesPerSnapshot", INT, &numFiles, 1);
     io_write_attribute_i(h_grp, "ThisFile", 0);
-    io_write_attribute_s(h_grp, "OutputType", "Snapshot");
+    io_write_attribute_s(h_grp, "OutputType", "FullVolume");
     io_write_attribute_s(h_grp, "SelectOutput", current_selection_name);
 
     /* Close header */
diff --git a/src/single_io.c b/src/single_io.c
index dfc1362ba1507ddecf2e9935ff3d49a741f50fbf..7319b5e3b2b589f2a45bc5b1a260672bfe8638f7 100644
--- a/src/single_io.c
+++ b/src/single_io.c
@@ -864,7 +864,7 @@ void write_output_single(struct engine* e,
                      swift_type_count);
   io_write_attribute(h_grp, "NumFilesPerSnapshot", INT, &numFiles, 1);
   io_write_attribute_i(h_grp, "ThisFile", 0);
-  io_write_attribute_s(h_grp, "OutputType", "Snapshot");
+  io_write_attribute_s(h_grp, "OutputType", "FullVolume");
   io_write_attribute_s(h_grp, "SelectOutput", current_selection_name);
 
   /* Close header */