diff --git a/LatticeDehomogenization/src/inputParsing/ParseCommandLine.h b/LatticeDehomogenization/src/inputParsing/ParseCommandLine.h
index 9551f9c1066e00b872b139cc62ea75bb4d54326b..14d82fceea9d2f47f56c627b120ef7a2bf02e3bf 100644
--- a/LatticeDehomogenization/src/inputParsing/ParseCommandLine.h
+++ b/LatticeDehomogenization/src/inputParsing/ParseCommandLine.h
@@ -10,7 +10,7 @@
 typedef std::unordered_map<std::string, std::string> KeyValueMap;
 typedef std::unordered_set<std::string> AcceptedKeys;
 
-#define ACCEPTED_KEYS { "--input", "--bounds", "--output" }
+#define ACCEPTED_KEYS { "--input", "--bounds", "--output", "--celltype" }
 
 
 class ParseCommandLine