if (test->msinum > 0 && test->msinum <= 32) {
                ret = ioctl(fd, PCITEST_MSI, test->msinum);
-               fprintf(stdout, "MSI%d:\t\t", test->msinum);
+               fprintf(stdout, "MSI%u:\t\t", test->msinum);
                if (ret < 0)
                        fprintf(stdout, "TEST FAILED\n");
                else
 
        if (test->msixnum > 0 && test->msixnum <= 2048) {
                ret = ioctl(fd, PCITEST_MSIX, test->msixnum);
-               fprintf(stdout, "MSI-X%d:\t\t", test->msixnum);
+               fprintf(stdout, "MSI-X%u:\t\t", test->msixnum);
                if (ret < 0)
                        fprintf(stdout, "TEST FAILED\n");
                else
                if (test->use_dma)
                        param.flags = PCITEST_FLAGS_USE_DMA;
                ret = ioctl(fd, PCITEST_WRITE, ¶m);
-               fprintf(stdout, "WRITE (%7ld bytes):\t\t", test->size);
+               fprintf(stdout, "WRITE (%7lu bytes):\t\t", test->size);
                if (ret < 0)
                        fprintf(stdout, "TEST FAILED\n");
                else
                if (test->use_dma)
                        param.flags = PCITEST_FLAGS_USE_DMA;
                ret = ioctl(fd, PCITEST_READ, ¶m);
-               fprintf(stdout, "READ (%7ld bytes):\t\t", test->size);
+               fprintf(stdout, "READ (%7lu bytes):\t\t", test->size);
                if (ret < 0)
                        fprintf(stdout, "TEST FAILED\n");
                else
                if (test->use_dma)
                        param.flags = PCITEST_FLAGS_USE_DMA;
                ret = ioctl(fd, PCITEST_COPY, ¶m);
-               fprintf(stdout, "COPY (%7ld bytes):\t\t", test->size);
+               fprintf(stdout, "COPY (%7lu bytes):\t\t", test->size);
                if (ret < 0)
                        fprintf(stdout, "TEST FAILED\n");
                else