diff --git a/DataProducts/inc/CompressedPDGCode.hh b/DataProducts/inc/CompressedPDGCode.hh
index dd81ee2e47..678ba5a90e 100644
--- a/DataProducts/inc/CompressedPDGCode.hh
+++ b/DataProducts/inc/CompressedPDGCode.hh
@@ -20,6 +20,7 @@ namespace mu2e {
     enum enum_type
       {
         anti_n0     = -7,
+        anti_neutron = -7,
         anti_proton = -6,
         K_minus     = -5,
         pi_minus    = -4,
@@ -34,6 +35,7 @@ namespace mu2e {
         K_plus      =  5,
         proton      =  6,
         n0          =  7,
+        neutron     =  7,
         pi0         =  8,
         K_S0        =  9,
         K_L0        = 10,
diff --git a/DataProducts/inc/PDGCode.hh b/DataProducts/inc/PDGCode.hh
index f4d662246f..be8d9a47d4 100644
--- a/DataProducts/inc/PDGCode.hh
+++ b/DataProducts/inc/PDGCode.hh
@@ -301,7 +301,9 @@ namespace mu2e {
         n_diffr = 2110 ,
         anti_n_diffr = -2110 ,
         n0 = 2112 ,
+        neutron = 2112 ,
         anti_n0 = -2112 ,
+        anti_neutron = -2112 ,
         Delta0 = 2114 ,
         anti_Delta0 = -2114 ,
         p_diffr_plus = 2210 ,
diff --git a/DataProducts/src/CompressedPDGCode.cc b/DataProducts/src/CompressedPDGCode.cc
index a91d6534ac..84a9db0de2 100644
--- a/DataProducts/src/CompressedPDGCode.cc
+++ b/DataProducts/src/CompressedPDGCode.cc
@@ -8,7 +8,7 @@ namespace mu2e {
   }
 
   static const std::map<CompressedPDGCodeDetail::enum_type,std::string> nam{
-    {CompressedPDGCodeDetail::anti_n0       , "anti_n0" },      // -7
+    {CompressedPDGCodeDetail::anti_n0       , "anti_neutron" },  // -7
     {CompressedPDGCodeDetail::anti_proton   , "anti_proton" },  // -6
     {CompressedPDGCodeDetail::K_minus       , "K_minus" },      // -5
     {CompressedPDGCodeDetail::pi_minus      , "pi_minus" },     // -4
@@ -22,7 +22,7 @@ namespace mu2e {
     {CompressedPDGCodeDetail::pi_plus       , "pi_plus" },      //  4
     {CompressedPDGCodeDetail::K_plus        , "K_plus" },       //  5
     {CompressedPDGCodeDetail::proton        , "proton" },       //  6
-    {CompressedPDGCodeDetail::n0            , "n0" },           //  7
+    {CompressedPDGCodeDetail::n0            , "neutron" },      //  7
     {CompressedPDGCodeDetail::pi0           , "pi0" },          //  8
     {CompressedPDGCodeDetail::K_S0          , "K_S0" },         //  9
     {CompressedPDGCodeDetail::K_L0          , "K_L0" },         // 10
diff --git a/DataProducts/src/PDGCode.cc b/DataProducts/src/PDGCode.cc
index c68188480b..7db6c4a60b 100644
--- a/DataProducts/src/PDGCode.cc
+++ b/DataProducts/src/PDGCode.cc
@@ -306,8 +306,8 @@ namespace mu2e {
       {PDGCodeDetail::anti_Delta_plus               , "anti_Delta_plus" },
       {PDGCodeDetail::n_diffr                       , "n_diffr" },
       {PDGCodeDetail::anti_n_diffr                  , "anti_n_diffr" },
-      {PDGCodeDetail::n0                            , "n0" },
-      {PDGCodeDetail::anti_n0                       , "anti_n0" },
+      {PDGCodeDetail::n0                            , "neutron" },
+      {PDGCodeDetail::anti_n0                       , "anti_neutron" },
       {PDGCodeDetail::Delta0                        , "Delta0" },
       {PDGCodeDetail::anti_Delta0                   , "anti_Delta0" },
       {PDGCodeDetail::p_diffr_plus                  , "p_diffr_plus" },