diff --git a/doc/cvode/guide/source/Usage/index.rst b/doc/cvode/guide/source/Usage/index.rst
index 4fbf898baf..c8f309c8fa 100644
--- a/doc/cvode/guide/source/Usage/index.rst
+++ b/doc/cvode/guide/source/Usage/index.rst
@@ -112,7 +112,7 @@ more information).
 Other headers may be needed, according to the choice of preconditioner, etc. For example, in the
 example (see :cite:p:`cvode_ex`), preconditioning is done with a block-diagonal matrix. For this,
 even though the ``SUNLINSOL_SPGMR`` linear solver is used, the header  
-``sundials dense.h`` is included for access to the underlying generic dense matrix  
+``sundials_dense.h`` is included for access to the underlying generic dense matrix  
 arithmetic routines.  
 
 .. _CVODE.Usage.CC.skeleton_sim:
diff --git a/doc/cvodes/guide/source/Usage/SIM.rst b/doc/cvodes/guide/source/Usage/SIM.rst
index 9f9f24ea85..8776f35d25 100644
--- a/doc/cvodes/guide/source/Usage/SIM.rst
+++ b/doc/cvodes/guide/source/Usage/SIM.rst
@@ -111,7 +111,7 @@ more information).
 Other headers may be needed, according to the choice of preconditioner, etc. For example, in the
 example (see :cite:p:`cvodes_ex`), preconditioning is done with a block-diagonal matrix. For this,
 even though the ``SUNLINSOL_SPGMR`` linear solver is used, the header  
-``sundials dense.h`` is included for access to the underlying generic dense matrix  
+``sundials_dense.h`` is included for access to the underlying generic dense matrix  
 arithmetic routines.
 
 .. warning::
diff --git a/include/sundials/priv/sundials_errors_impl.h b/include/sundials/priv/sundials_errors_impl.h
index d279f9c5dc..6341f5b58f 100644
--- a/include/sundials/priv/sundials_errors_impl.h
+++ b/include/sundials/priv/sundials_errors_impl.h
@@ -143,7 +143,7 @@ void SUNHandleErrWithFmtMsg(int line, const char* func, const char* file,
  * We define several different version of SUNCheck* macros to cover various
  * programming scenarios.
  *
- * SUNCheckCall* macros are used to check SUNDIALS functions calls which do
+ * SUNCheckCall* macros are used to check SUNDIALS function calls which do
  * return a SUNErrCode.
  *
  * SUNCheckLastErr* macros are used to check SUNDIALS function calls that
@@ -278,7 +278,7 @@ void SUNHandleErrWithFmtMsg(int line, const char* func, const char* file,
 
 /* SUNCheckLastErrMoRetMsg checks the last_err value in the SUNContext.
    If an error occured, then it will log the error, set the last_err
-   value, and calls the error handler. */
+   value, and call the error handler. */
 #if defined(SUNDIALS_ENABLE_ERROR_CHECKS)
 #define SUNCheckLastErrMsg(msg) \
   SUNCheckCallMsg(SUNContext_GetLastError(SUNCTX_), msg)
@@ -305,7 +305,7 @@ void SUNHandleErrWithFmtMsg(int line, const char* func, const char* file,
 /*
   SUNAssert checks if an expression is true. It expands to SUNCheck when error
   checks are enabled. If error checks are disabled, then we try to expand it to
-  an assumption, if the compiler supoprts, so that the compiler can make
+  an assumption, if the compiler supports, so that the compiler can make
   optimizations based on the assumption.
 
   :param expr: a expression to evaluate as true or false
diff --git a/include/sundials/priv/sundials_mpi_errors_impl.h b/include/sundials/priv/sundials_mpi_errors_impl.h
index c063bdeffb..48836ba460 100644
--- a/include/sundials/priv/sundials_mpi_errors_impl.h
+++ b/include/sundials/priv/sundials_mpi_errors_impl.h
@@ -27,7 +27,7 @@
 /*
    SUNCheckMPICallMsg performs the MPI function call, and checks the
    returned error code. If an error occured, then it will log the error, set the
-   last_err value, call the error handler, **and then returns SUN_ERR_MPI_FAIL**.
+   last_err value, call the error handler, **and then return SUN_ERR_MPI_FAIL**.
 
    :param call: the MPI function call
    :param msg: an error message
@@ -51,7 +51,7 @@
 /*
    SUNCheckMPICallNullMsg performs the MPI function call, and checks the
    returned error code. If an error occured, then it will log the error, set the
-   last_err value, call the error handler, **and then returns NULL**.
+   last_err value, call the error handler, **and then return NULL**.
 
    :param call: the MPI function call
    :param msg: an error message
@@ -75,7 +75,7 @@
 /*
    SUNCheckMPICallVoidMsg performs the MPI function call, and checks the
    returned error code. If an error occured, then it will log the error, set the
-   last_err value, call the error handler, **and then returns void**.
+   last_err value, call the error handler, **and then return void**.
 
    :param call: the MPI function call
    :param msg: an error message
@@ -99,7 +99,7 @@
 /*
    SUNCheckMPICallNoRetMsg performs the MPI function call, and checks the
    returned error code. If an error occured, then it will log the error, set the
-   last_err value, call the error handler. **It does not return**.
+   last_err value, and call the error handler. **It does not return**.
 
    :param call: the MPI function call
    :param msg: an error message