diff --git a/src/ncint/ncint_pio.c b/src/ncint/ncint_pio.c
index 8ef61a8158..cedcac77a7 100644
--- a/src/ncint/ncint_pio.c
+++ b/src/ncint/ncint_pio.c
@@ -55,10 +55,10 @@ nc_def_iosystemm(MPI_Comm comp_comm, int num_iotasks, int stride, int base,
  * numbers for each computation component. If NULL then the
  * computation components are assigned processors sequentially
  * starting with processor num_io_procs.
- * @param user_io_comm pointer to an MPI_Comm. If not NULL, it will
+ * @param io_comm pointer to an MPI_Comm. If not NULL, it will
  * get an MPI duplicate of the IO communicator. (It is a full
  * duplicate and later must be freed with MPI_Free() by the caller.)
- * @param user_comp_comm pointer to an array of pointers to MPI_Comm;
+ * @param comp_comm pointer to an array of pointers to MPI_Comm;
  * the array is of length component_count. If not NULL, it will get an
  * MPI duplicate of each computation communicator. (These are full
  * duplicates and each must later be freed with MPI_Free() by the
diff --git a/tests/fncint/Makefile.am b/tests/fncint/Makefile.am
index e92347511e..f45c1ca581 100644
--- a/tests/fncint/Makefile.am
+++ b/tests/fncint/Makefile.am
@@ -16,7 +16,7 @@ LDADD += -lnetcdff
 AM_FCFLAGS = -I${top_builddir}/src/flib ${CPPFLAGS}
 
 # Find the pio.h and pio_tests.h file for the C test.
-AM_CPPFLAGS = -I${top_srcdir}/src/clib -I${top_srcdir}/tests/cunit
+AM_CPPFLAGS += -I${top_srcdir}/src/clib -I${top_srcdir}/tests/cunit
 
 # Build the test for make check.
 check_PROGRAMS = ftst_pio ftst_pio_orig tst_c_pio