diff --git a/src/modify.cpp b/src/modify.cpp
index 1a9c056027..a7d0000bc0 100644
--- a/src/modify.cpp
+++ b/src/modify.cpp
@@ -827,7 +827,7 @@ Fix *Modify::add_fix(int narg, char **arg, int trysuffix)
   const char *exceptions[] =
     {"GPU", "OMP", "INTEL", "property/atom", "cmap", "cmap3", "rx",
      "deprecated", "STORE/KIM", "amoeba/pitorsion", "amoeba/bitorsion",
-     nullptr};
+     "DUMMY", nullptr};
   // clang-format on
 
   if (domain->box_exist == 0) {