diff --git a/src/dump.cpp b/src/dump.cpp
index 7cd80dcf71..8fa07a9cb2 100644
--- a/src/dump.cpp
+++ b/src/dump.cpp
@@ -423,7 +423,12 @@ void Dump::write()
     atom->x = xpbc;
     atom->v = vpbc;
     atom->image = imagepbc;
+
+    // for triclinic, PBC is applied in lamda coordinates
+
+    if (domain->triclinic) domain->x2lamda(nlocal);
     domain->pbc();
+    if (domain->triclinic) domain->lamda2x(nlocal);
   }
 
   // pack my data into buf