diff --git a/src/BODY/body_nparticle.cpp b/src/BODY/body_nparticle.cpp
index 0e1afd51f4dc7774dfb37668b86aabf84d331aa1..1dbcb09550387c4469ea6d245e56dca3783fa0a2 100644
--- a/src/BODY/body_nparticle.cpp
+++ b/src/BODY/body_nparticle.cpp
@@ -23,7 +23,7 @@
 using namespace LAMMPS_NS;
 
 #define EPSILON 1.0e-7
-enum{SPHERE,LINE};           // also in DumpImage
+enum{SPHERE,LINE,TRI};           // also in DumpImage
 
 /* ---------------------------------------------------------------------- */