diff --git a/daemon/graphdriver/devmapper/deviceset.go b/daemon/graphdriver/devmapper/deviceset.go
index cf79014b4d..71c214d5d8 100644
--- a/daemon/graphdriver/devmapper/deviceset.go
+++ b/daemon/graphdriver/devmapper/deviceset.go
@@ -776,7 +776,7 @@ func (devices *DeviceSet) poolHasFreeSpace() error {
 
 	minFreeMetadata := (metadataTotal * uint64(devices.minFreeSpacePercent)) / 100
 	if minFreeMetadata < 1 {
-		minFreeData = 1
+		minFreeMetadata = 1
 	}
 
 	metadataFree := metadataTotal - metadataUsed