diff --git a/var/spack/repos/builtin/packages/fastmath/package.py b/var/spack/repos/builtin/packages/fastmath/package.py
index 3475179946..56802905fc 100644
--- a/var/spack/repos/builtin/packages/fastmath/package.py
+++ b/var/spack/repos/builtin/packages/fastmath/package.py
@@ -19,13 +19,11 @@ class Fastmath(Package):
     version('1.0', 'e2b724dfcc31d735897971db91be89ff')
 
     # BundlePackage
-    depends_on('boxlib dims=3')
+    depends_on('amrex')  # default is 3 dimensions
     depends_on('chombo@3.2')
     depends_on('hypre~internal-superlu')
-    depends_on('mesquite')
 #    depends_on('ml-trilinos')  # hoping for stripped down install of just ml
 #    depends_on('nox-trilinos')  # hoping for stripped down install of just nox
-    depends_on('moab')
     depends_on('mpi')
     depends_on('arpack-ng')
     depends_on('petsc')