diff --git a/sf-writer/sf_h5_writer.cpp b/sf-writer/sf_h5_writer.cpp
index dfcbce4..d7baf8b 100644
--- a/sf-writer/sf_h5_writer.cpp
+++ b/sf-writer/sf_h5_writer.cpp
@@ -43,7 +43,7 @@ int main (int argc, char *argv[])
 
         metadata = reader.load_frame_to_buffer(pulse_id);
 
-        writer.write_data("frame", output_file_position,
+        writer.write_data("image", output_file_position,
                           frame_buffer,
                           {32*512, 1024}, 32*512*1024*2, "uint16", "little");