diff --git a/examples/touchscreen/tc_main.c b/examples/touchscreen/tc_main.c
index 6b792a6ff..cff8d9f51 100644
--- a/examples/touchscreen/tc_main.c
+++ b/examples/touchscreen/tc_main.c
@@ -126,7 +126,7 @@ int main(int argc, FAR char *argv[])
 
       iinfo("Reading...\n");
       nbytes = read(fd, &sample, sizeof(struct mouse_report_s));
-      iinfo("Bytes read: %d\n", nbytes);
+      iinfo("Bytes read: %zd\n", nbytes);
 
       /* Handle unexpected return values */
 
@@ -145,7 +145,7 @@ int main(int argc, FAR char *argv[])
         }
       else if (nbytes != sizeof(struct mouse_report_s))
         {
-          printf("tc_main: Unexpected read size=%d, expected=%d, Ignoring\n",
+          printf("tc_main: Unexpected read size=%zd,expected=%zd,Ignoring\n",
                  nbytes, sizeof(struct mouse_report_s));
         }