diff --git a/src/Package.sh b/src/Package.sh
index b42494503d..fb3694bb4e 100644
--- a/src/Package.sh
+++ b/src/Package.sh
@@ -81,7 +81,7 @@ elif (test $2 = "overwrite") then
 
 # regenenate Makefile.package from Makefile.package.empty
 # if installed:
-# re-install so Install.sh will edit Makefile.pacakge
+# re-install so Install.sh will edit Makefile.package
 
 elif (test $2 = "regenerate") then
   if (test $installed = 1) then
diff --git a/src/USER-CUDA/Install.sh b/src/USER-CUDA/Install.sh
index 68ab36226a..2994d3cdca 100755
--- a/src/USER-CUDA/Install.sh
+++ b/src/USER-CUDA/Install.sh
@@ -1,5 +1,5 @@
 # Install/unInstall package files in LAMMPS
-# edit Makefile.package to include/exclude CUDA library
+# edit 2 Makefile.package files to include/exclude CUDA info
 # do not install child files if parent does not exist
 
 if (test $1 = 1) then
diff --git a/src/lammps.cpp b/src/lammps.cpp
index 85dc1ce67f..7d5a726ac3 100644
--- a/src/lammps.cpp
+++ b/src/lammps.cpp
@@ -325,6 +325,19 @@ LAMMPS::LAMMPS(int narg, char **arg, MPI_Comm communicator)
   if (mpisize != sizeof(bigint))
       error->all("MPI_LMP_BIGINT and bigint in lmptype.h are not compatible");
 
+#ifdef LAMMPS_SMALLBIG
+  if (sizeof(smallint) != 4 || sizeof(tagint) != 4 || sizeof(bigint) != 8)
+    error->all("Small, tag, big integers are not sized correctly");
+#endif
+#ifdef LAMMPS_BIGBIG
+  if (sizeof(smallint) != 4 || sizeof(tagint) != 8 || sizeof(bigint) != 8)
+    error->all("Small, tag, big integers are not sized correctly");
+#endif
+#ifdef LAMMPS_SMALLSMALL
+  if (sizeof(smallint) != 4 || sizeof(tagint) != 4 || sizeof(bigint) != 4)
+    error->all("Small, tag, big integers are not sized correctly");
+#endif
+
   if (sizeof(tagint) == 8) error->all("64-bit atom IDs are not yet supported");
 
   // create CUDA class if USER-CUDA installed, unless explicitly switched off