diff --git a/src/dump_cfg.cpp b/src/dump_cfg.cpp
index 9a0134d3c8..1635252f18 100755
--- a/src/dump_cfg.cpp
+++ b/src/dump_cfg.cpp
@@ -113,8 +113,7 @@ DumpCFG::~DumpCFG()
 
 void DumpCFG::init_style()
 {
-  if (multifile == 0)
-    error->all("Dump in CFG format requires one snapshot per file");
+  if (multifile == 0) error->all("Dump cfg requires one snapshot per file");
 
   if (typenames == NULL) {
     typenames = new char*[ntypes+1];