diff --git a/testing/ostest/aio.c b/testing/ostest/aio.c
index fd08ff3f1..7eddbc76e 100644
--- a/testing/ostest/aio.c
+++ b/testing/ostest/aio.c
@@ -155,7 +155,7 @@ static int check_done(void)
         {
           /* Check if the I/O has completed */
 
-          printf("  list[%d]. result = %d\n", i, aiocbp->aio_result);
+          printf("  list[%d]. result = %zd\n", i, aiocbp->aio_result);
           if (aiocbp->aio_lio_opcode == LIO_NOP)
             {
               printf("     NO operation\n");
@@ -219,7 +219,7 @@ static int remove_done(void)
         {
           /* Check if the I/O has completed */
 
-          printf("  list[%d]. result = %d\n", i, aiocbp->aio_result);
+          printf("  list[%d]. result = %zd\n", i, aiocbp->aio_result);
           if (aiocbp->aio_lio_opcode == LIO_NOP)
             {
               printf("     NO operation\n");
diff --git a/testing/ostest/sporadic2.c b/testing/ostest/sporadic2.c
index 00a0c3dfc..d295ae619 100644
--- a/testing/ostest/sporadic2.c
+++ b/testing/ostest/sporadic2.c
@@ -44,7 +44,7 @@
 #define PRIO_MID      100
 #define PRIO_HIGH1    180
 #define PRIO_HIGH2    170
-#define REPL_INTERVAL 100000000L
+#define REPL_INTERVAL INT32_C(100000000)
 #define MAX_BUDGET    (REPL_INTERVAL / 2)
 #define PRIO_HI_NDX   0
 #define PRIO_LO_NDX   1