1 files changed, 1 insertions, 1 deletions
diff --git a/Source/Diagnostics/ReducedDiags/ParticleNumber.cpp b/Source/Diagnostics/ReducedDiags/ParticleNumber.cpp
index f37cec056..8c0377a3a 100644
--- a/Source/Diagnostics/ReducedDiags/ParticleNumber.cpp
+++ b/Source/Diagnostics/ReducedDiags/ParticleNumber.cpp
@@ -48,7 +48,7 @@ ParticleNumber::ParticleNumber (std::string rd_name)
 
     if (amrex::ParallelDescriptor::IOProcessor())
     {
-        if ( m_IsNotRestart )
+        if ( m_write_header )
         {
             // open file
             std::ofstream ofs{m_path + m_rd_name + "." + m_extension, std::ofstream::out};