diff --git a/test/units/TEST-17-UDEV.verify.sh b/test/units/TEST-17-UDEV.verify.sh
index b456fdef72..f0c4f1a2a7 100755
--- a/test/units/TEST-17-UDEV.verify.sh
+++ b/test/units/TEST-17-UDEV.verify.sh
@@ -293,7 +293,7 @@ test_syntax_error 'OWNER!="b"' 'Invalid operator for OWNER.'
 test_syntax_error 'OWNER+="0"' "OWNER key takes '=' or ':=' operator, assuming '='."
 # numeric system UID is valid even if it does not exist
 SYS_UID_MAX=999
-if command userdbctl >/dev/null; then
+if command -v userdbctl >/dev/null; then
     # For the case if non-default setting is used. E.g. OpenSUSE uses 499.
     SYS_UID_MAX="$(userdbctl user -S --no-legend --no-pager | grep 'end system' | awk '{print $8}')"
     echo "SYS_UID_MAX=$SYS_UID_MAX acquired from userdbctl"
@@ -325,7 +325,7 @@ test_syntax_error 'GROUP!="b"' 'Invalid operator for GROUP.'
 test_syntax_error 'GROUP+="0"' "GROUP key takes '=' or ':=' operator, assuming '='."
 # numeric system GID is valid even if it does not exist
 SYS_GID_MAX=999
-if command userdbctl >/dev/null; then
+if command -v userdbctl >/dev/null; then
     # For the case if non-default setting is used. E.g. OpenSUSE uses 499.
     SYS_GID_MAX="$(userdbctl group -S --no-legend --no-pager | grep 'end system' | awk '{print $8}')"
     echo "SYS_GID_MAX=$SYS_GID_MAX acquired from userdbctl"
diff --git a/test/units/TEST-75-RESOLVED.sh b/test/units/TEST-75-RESOLVED.sh
index 1bde5f3b76..2018a40f39 100755
--- a/test/units/TEST-75-RESOLVED.sh
+++ b/test/units/TEST-75-RESOLVED.sh
@@ -16,7 +16,7 @@ set -o pipefail
 # shellcheck source=test/units/util.sh
 . "$(dirname "$0")"/util.sh
 
-if ! command knotc >/dev/null; then
+if ! command -v knotc >/dev/null; then
     echo "command knotc not found, skipping..." | tee --append /skipped
     exit 77
 fi