diff --git a/src/dump_image.cpp b/src/dump_image.cpp
index ec463049e4..04dff2385e 100644
--- a/src/dump_image.cpp
+++ b/src/dump_image.cpp
@@ -36,7 +36,7 @@ using namespace LAMMPS_NS;
 using namespace MathConst;
 
 enum{PPM,JPG};
-enum{NUMERIC,ATOM,TYPE,ELEMENT,ATTRIBUTE,MINVALUE,MAXVALUE};
+enum{NUMERIC,ATOM,TYPE,ELEMENT,ATTRIBUTE};
 enum{STATIC,DYNAMIC};
 enum{NO,YES};