diff --git a/.clang-tidy b/.clang-tidy
index 99b920ef..675a5fdd 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -1,4 +1,4 @@
-HeaderFilterRegex: 'hephaestus/[ste]'
+HeaderFilterRegex: 'platypus/[ste]'
 Checks:              '-*,readability-identifier-naming,readability-redundant-member-init,modernize-*,-modernize-use-trailing-return-type,-modernize-avoid-c-arrays'
 CheckOptions:
   - key:             readability-identifier-naming.AggressiveDependentMemberLookup
diff --git a/include/base/hephaestus.h b/include/base/platypus.h
similarity index 100%
rename from include/base/hephaestus.h
rename to include/base/platypus.h
diff --git a/include/problem/MFEMProblem.h b/include/problem/MFEMProblem.h
index 0da282e8..e5d96002 100644
--- a/include/problem/MFEMProblem.h
+++ b/include/problem/MFEMProblem.h
@@ -23,7 +23,7 @@
 #include "SystemBase.h"
 #include "Transient.h"
 #include "Steady.h"
-#include "hephaestus.h"
+#include "platypus.h"
 #include "libmesh/string_to_enum.h"
 #include "libmesh/point.h"
 
diff --git a/src/actions/AddFormulationAction.C b/src/actions/AddFormulationAction.C
index f9897881..ae256cde 100644
--- a/src/actions/AddFormulationAction.C
+++ b/src/actions/AddFormulationAction.C
@@ -6,7 +6,7 @@ InputParameters
 AddFormulationAction::validParams()
 {
   InputParameters params = MooseObjectAction::validParams();
-  params.addClassDescription("Set the Hephaestus formulation to solve in the simulation.");
+  params.addClassDescription("Set the platypus formulation to solve in the simulation.");
   return params;
 }