diff --git a/libknet/tests/api_knet_handle_compress.c b/libknet/tests/api_knet_handle_compress.c
index 3cb2ef41..31392cfd 100644
--- a/libknet/tests/api_knet_handle_compress.c
+++ b/libknet/tests/api_knet_handle_compress.c
@@ -1,197 +1,213 @@
 /*
  * Copyright (C) 2017-2019 Red Hat, Inc.  All rights reserved.
  *
  * Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
  *
  * This software licensed under GPL-2.0+
  */
 
 #include "config.h"
 
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
 #include "libknet.h"
 
 #include "internals.h"
 #include "test-common.h"
 
 static void test(void)
 {
 	knet_handle_t knet_h;
 	int logfds[2];
 	struct knet_handle_compress_cfg knet_handle_compress_cfg;
 
 	memset(&knet_handle_compress_cfg, 0, sizeof(struct knet_handle_compress_cfg));
 
 	printf("Test knet_handle_compress incorrect knet_h\n");
 
 	if ((!knet_handle_compress(NULL, &knet_handle_compress_cfg)) || (errno != EINVAL)) {
 		printf("knet_handle_compress accepted invalid knet_h or returned incorrect error: %s\n", strerror(errno));
 		exit(FAIL);
 	}
 
 	setup_logpipes(logfds);
 
 	knet_h = knet_handle_start(logfds, KNET_LOG_DEBUG);
 
 	flush_logs(logfds[0], stdout);
 
 	printf("Test knet_handle_compress with invalid cfg\n");
 
 	if ((!knet_handle_compress(knet_h, NULL)) || (errno != EINVAL)) {
 		printf("knet_handle_compress accepted invalid cfg or returned incorrect error: %s\n", strerror(errno));
 		knet_handle_free(knet_h);
 		flush_logs(logfds[0], stdout);
 		close_logpipes(logfds);
 		exit(FAIL);
 	}
 
 	flush_logs(logfds[0], stdout);
 
 	printf("Test knet_handle_compress with un-initialized cfg\n");
 
 	memset(&knet_handle_compress_cfg, 0, sizeof(struct knet_handle_compress_cfg));
 
 	if ((!knet_handle_compress(knet_h, &knet_handle_compress_cfg)) || (errno != EINVAL)) {
 		printf("knet_handle_compress accepted invalid un-initialized cfg\n");
 		knet_handle_free(knet_h);
 		flush_logs(logfds[0], stdout);
 		close_logpipes(logfds);
 		exit(FAIL);
 	}
 
 	flush_logs(logfds[0], stdout);
 
 	printf("Test knet_handle_compress with none compress model (disable compress)\n");
 
 	memset(&knet_handle_compress_cfg, 0, sizeof(struct knet_handle_compress_cfg));
 	strncpy(knet_handle_compress_cfg.compress_model, "none", sizeof(knet_handle_compress_cfg.compress_model) - 1);
 
 	if (knet_handle_compress(knet_h, &knet_handle_compress_cfg) != 0) {
 		printf("knet_handle_compress did not accept none compress mode cfg\n");
 		knet_handle_free(knet_h);
 		flush_logs(logfds[0], stdout);
 		close_logpipes(logfds);
 		exit(FAIL);
 	}
 
 	flush_logs(logfds[0], stdout);
 
+	printf("Test knet_handle_compress with bzip2 (no default) with negative level (-3)\n");
+#ifdef BZIP2_COMPRESS_LEVEL
+        memset(&knet_handle_compress_cfg, 0, sizeof(struct knet_handle_compress_cfg));
+        strncpy(knet_handle_compress_cfg.compress_model, "bzip2", sizeof(knet_handle_compress_cfg.compress_model) - 1);
+        knet_handle_compress_cfg.compress_level = -3;
+
+        if((!knet_handle_compress(knet_h, &knet_handle_compress_cfg)) || (errno != EINVAL)) {
+                printf("knet_handle_compress accepted invalid (-3) compress level and for bzip2, which is no default defined\n");
+                knet_handle_free(knet_h);
+                flush_logs(logfds[0], stdout);
+                close_logpipes(logfds);
+                exit(FAIL);
+        }
+#endif
+	flush_logs(logfds[0], stdout);
+
 	printf("Test knet_handle_compress with zlib compress and not effective compression level (0)\n");
 
 	memset(&knet_handle_compress_cfg, 0, sizeof(struct knet_handle_compress_cfg));
 	strncpy(knet_handle_compress_cfg.compress_model, "zlib", sizeof(knet_handle_compress_cfg.compress_model) - 1);
 	knet_handle_compress_cfg.compress_level = 0;
 
 	if((knet_handle_compress(knet_h, &knet_handle_compress_cfg)) || (errno == EINVAL)) {
 		printf("knet_handle_compress failed to compress with default compression level\n");
 		knet_handle_free(knet_h);
 		flush_logs(logfds[0], stdout);
 		close_logpipes(logfds);
 		exit(FAIL);
 	}
 
 	flush_logs(logfds[0], stdout);
 
 	printf("Test knet_handle_compress with zlib compress and negative level (-2)\n");
 
 	memset(&knet_handle_compress_cfg, 0, sizeof(struct knet_handle_compress_cfg));
 	strncpy(knet_handle_compress_cfg.compress_model, "zlib", sizeof(knet_handle_compress_cfg.compress_model) - 1);
 	knet_handle_compress_cfg.compress_level = -2;
 
 	if ((!knet_handle_compress(knet_h, &knet_handle_compress_cfg)) || (errno != EINVAL)) {
 		printf("knet_handle_compress accepted invalid (-2) compress level for zlib\n");
 		knet_handle_free(knet_h);
 		flush_logs(logfds[0], stdout);
 		close_logpipes(logfds);
 		exit(FAIL);
 	}
 
 	flush_logs(logfds[0], stdout);
 
 	printf("Test knet_handle_compress with zlib compress and excessive compress level\n");
 
 	memset(&knet_handle_compress_cfg, 0, sizeof(struct knet_handle_compress_cfg));
 	strncpy(knet_handle_compress_cfg.compress_model, "zlib", sizeof(knet_handle_compress_cfg.compress_model) - 1);
 	knet_handle_compress_cfg.compress_level = 10;
 
 	if ((!knet_handle_compress(knet_h, &knet_handle_compress_cfg)) || (errno != EINVAL)) {
 		printf("knet_handle_compress accepted invalid (10) compress level for zlib\n");
 		knet_handle_free(knet_h);
 		flush_logs(logfds[0], stdout);
 		close_logpipes(logfds);
 		exit(FAIL);
 	}
 
 	flush_logs(logfds[0], stdout);
 
 	printf("Test knet_handle_compress with zlib compress and excessive compress threshold\n");
 
 	memset(&knet_handle_compress_cfg, 0, sizeof(struct knet_handle_compress_cfg));
 	strncpy(knet_handle_compress_cfg.compress_model, "zlib", sizeof(knet_handle_compress_cfg.compress_model) - 1);
 	knet_handle_compress_cfg.compress_level = 1;
 	knet_handle_compress_cfg.compress_threshold = KNET_MAX_PACKET_SIZE +1;
 
 	if ((!knet_handle_compress(knet_h, &knet_handle_compress_cfg)) || (errno != EINVAL)) {
 		printf("knet_handle_compress accepted invalid compress threshold\n");
 		knet_handle_free(knet_h);
 		flush_logs(logfds[0], stdout);
 		close_logpipes(logfds);
 		exit(FAIL);
 	}
 
 	flush_logs(logfds[0], stdout);
 
 	printf("Test knet_handle_compress with zlib compress model normal compress level and threshold\n");
 
 	memset(&knet_handle_compress_cfg, 0, sizeof(struct knet_handle_compress_cfg));
 	strncpy(knet_handle_compress_cfg.compress_model, "zlib", sizeof(knet_handle_compress_cfg.compress_model) - 1);
 	knet_handle_compress_cfg.compress_level = 1;
 	knet_handle_compress_cfg.compress_threshold = 64;
 
 	if (knet_handle_compress(knet_h, &knet_handle_compress_cfg) != 0) {
 		printf("knet_handle_compress did not accept zlib compress mode with compress level 1 cfg\n");
 		knet_handle_free(knet_h);
 		flush_logs(logfds[0], stdout);
 		close_logpipes(logfds);
 		exit(FAIL);
 	}
 	flush_logs(logfds[0], stdout);
 
 	knet_handle_free(knet_h);
 	flush_logs(logfds[0], stdout);
 	close_logpipes(logfds);
 }
 
 int main(int argc, char *argv[])
 {
 	struct knet_compress_info compress_list[16];
 	size_t compress_list_entries;
 	size_t i;
 
 	memset(compress_list, 0, sizeof(compress_list));
 
 	if (knet_get_compress_list(compress_list, &compress_list_entries) < 0) {
 		printf("knet_get_compress_list failed: %s\n", strerror(errno));
 		return FAIL;
 	}
 
 	if (compress_list_entries == 0) {
 		printf("no compression modules detected. Skipping\n");
 		return SKIP;
 	}
 
 	for (i=0; i < compress_list_entries; i++) {
 		if (!strcmp(compress_list[i].name, "zlib")) {
 			test();
 			return PASS;
 		}
 	}
 
 	printf("WARNING: zlib support not builtin the library. Unable to test/verify internal compress API calls\n");
 	return SKIP;
 }