diff --git a/test/units/testsuite-58.sh b/test/units/testsuite-58.sh
index c58465356c..20c2c57073 100755
--- a/test/units/testsuite-58.sh
+++ b/test/units/testsuite-58.sh
@@ -932,7 +932,7 @@ Minimize=guess
 EOF
     done
 
-    if ! command -v mksquashfs >/dev/null; then
+    if command -v mksquashfs >/dev/null; then
         tee "$defs/root-squashfs.conf" <<EOF
 [Partition]
 Type=root-${architecture}