diff --git a/test/units/TEST-17-UDEV.link-property.sh b/test/units/TEST-17-UDEV.link-property.sh
index 517cc3f7d2..faf05b83eb 100755
--- a/test/units/TEST-17-UDEV.link-property.sh
+++ b/test/units/TEST-17-UDEV.link-property.sh
@@ -163,11 +163,11 @@ EOF
 udevadm control --reload
 
 output=$(udevadm test --action add /sys/class/net/test1)
-assert_in "LINK_VERSION=$(uname -r)" "$output"
+assert_in "LINK_VERSION=$(uname -r | sed 's/\+/\\+/g')" "$output"
 
 udevadm trigger --settle --action add /sys/class/net/test1
 output=$(udevadm info --query property /sys/class/net/test1)
-assert_in "LINK_VERSION=$(uname -r)" "$output"
+assert_in "LINK_VERSION=$(uname -r | sed 's/\+/\\+/g')" "$output"
 
 # test for constant properties
 cat >/run/systemd/network/10-test.link.d/13-override.conf <<EOF
diff --git a/test/units/TEST-71-HOSTNAME.sh b/test/units/TEST-71-HOSTNAME.sh
index d1eaa8106e..1ed13fe414 100755
--- a/test/units/TEST-71-HOSTNAME.sh
+++ b/test/units/TEST-71-HOSTNAME.sh
@@ -31,7 +31,7 @@ testcase_hostname() {
     if [[ -n "$orig" ]]; then
         assert_in "Static hostname: $orig" "$(hostnamectl)"
     fi
-    assert_in "Kernel: $(uname -s) $(uname -r)" "$(hostnamectl)"
+    assert_in "Kernel: $(uname -s) $(uname -r | sed 's/\+/\\+/g')" "$(hostnamectl)"
 
     # change hostname
     assert_rc 0 hostnamectl set-hostname testhost