diff --git a/libnetwork/drivers/bridge/errors.go b/libnetwork/drivers/bridge/errors.go
index bf03157f8d..eda1bcb432 100644
--- a/libnetwork/drivers/bridge/errors.go
+++ b/libnetwork/drivers/bridge/errors.go
@@ -180,35 +180,6 @@ func (ndbee NonDefaultBridgeNeedsIPError) Error() string {
 // Forbidden denotes the type of this error
 func (ndbee NonDefaultBridgeNeedsIPError) Forbidden() {}
 
-// FixedCIDRv4Error is returned when fixed-cidrv4 configuration
-// failed.
-type FixedCIDRv4Error struct {
-	Net    *net.IPNet
-	Subnet *net.IPNet
-	Err    error
-}
-
-func (fcv4 *FixedCIDRv4Error) Error() string {
-	return fmt.Sprintf("setup FixedCIDRv4 failed for subnet %s in %s: %v", fcv4.Subnet, fcv4.Net, fcv4.Err)
-}
-
-// InternalError denotes the type of this error
-func (fcv4 *FixedCIDRv4Error) InternalError() {}
-
-// FixedCIDRv6Error is returned when fixed-cidrv6 configuration
-// failed.
-type FixedCIDRv6Error struct {
-	Net *net.IPNet
-	Err error
-}
-
-func (fcv6 *FixedCIDRv6Error) Error() string {
-	return fmt.Sprintf("setup FixedCIDRv6 failed for subnet %s in %s: %v", fcv6.Net, fcv6.Net, fcv6.Err)
-}
-
-// InternalError denotes the type of this error
-func (fcv6 *FixedCIDRv6Error) InternalError() {}
-
 // IPv4AddrAddError is returned when IPv4 address could not be added to the bridge.
 type IPv4AddrAddError struct {
 	IP  *net.IPNet