diff --git a/pkg/systemd/quadlet/quadlet.go b/pkg/systemd/quadlet/quadlet.go
index 697c7455f9..f652ced092 100644
--- a/pkg/systemd/quadlet/quadlet.go
+++ b/pkg/systemd/quadlet/quadlet.go
@@ -1651,9 +1651,9 @@ func ConvertPod(podUnit *parser.UnitFile, name string, unitsInfoMap map[string]*
 	execStartPre.add("--infra-name", fmt.Sprintf("%s-infra", podName))
 	execStartPre.add("--name", podName)
 
-	shmSize := podUnit.LookupAll(PodGroup, KeyShmSize)
-	if len(shmSize) > 0 {
-		execStartPre.addf("--shm-size=%s", shmSize[0])
+	shmSize, exists := podUnit.Lookup(PodGroup, KeyShmSize)
+	if exists {
+		execStartPre.addf("--shm-size=%s", shmSize)
 	}
 
 	handlePodmanArgs(podUnit, PodGroup, execStartPre)