diff --git a/lib/loopaes/loopaes.c b/lib/loopaes/loopaes.c
index ab61ca3b..6ad965c1 100644
--- a/lib/loopaes/loopaes.c
+++ b/lib/loopaes/loopaes.c
@@ -228,7 +228,7 @@ int LOOPAES_activate(struct crypt_device *cd,
 
 	r = dm_create_device(cd, name, CRYPT_LOOPAES, &dmd, 0);
 
-	if (!r && !(dm_flags() & req_flags)) {
+	if (r < 0 && !(dm_flags() & req_flags)) {
 		log_err(cd, _("Kernel doesn't support loop-AES compatible mapping.\n"));
 		r = -ENOTSUP;
 	}
diff --git a/lib/tcrypt/tcrypt.c b/lib/tcrypt/tcrypt.c
index eb1e2dac..239d3c79 100644
--- a/lib/tcrypt/tcrypt.c
+++ b/lib/tcrypt/tcrypt.c
@@ -716,7 +716,7 @@ int TCRYPT_activate(struct crypt_device *cd,
 			break;
 	}
 
-	if (!r && !(dm_flags() & DM_PLAIN64_SUPPORTED)) {
+	if (r < 0 && !(dm_flags() & DM_PLAIN64_SUPPORTED)) {
 		log_err(cd, _("Kernel doesn't support plain64 IV.\n"));
 		r = -ENOTSUP;
 	}
diff --git a/lib/verity/verity.c b/lib/verity/verity.c
index e3285a21..c2b84051 100644
--- a/lib/verity/verity.c
+++ b/lib/verity/verity.c
@@ -272,7 +272,7 @@ int VERITY_activate(struct crypt_device *cd,
 		return r;
 
 	r = dm_create_device(cd, name, CRYPT_VERITY, &dmd, 0);
-	if (!r && !(dm_flags() & DM_VERITY_SUPPORTED)) {
+	if (r < 0 && !(dm_flags() & DM_VERITY_SUPPORTED)) {
 		log_err(cd, _("Kernel doesn't support dm-verity mapping.\n"));
 		return -ENOTSUP;
 	}
diff --git a/tests/verity-compat-test b/tests/verity-compat-test
index b39dcf8c..e9c1101a 100755
--- a/tests/verity-compat-test
+++ b/tests/verity-compat-test
@@ -149,6 +149,7 @@ function valgrind_run()
 
 [ -n "$VALG" ] && valgrind_setup && VERITYSETUP=valgrind_run
 modprobe dm-verity >/dev/null 2>&1
+dmsetup targets | grep verity >/dev/null 2>&1 || skip "Cannot find dm-verity target, test skipped."
 
 # VERITYSETUP tests