diff --git a/libnetwork/drivers/bridge/errors.go b/libnetwork/drivers/bridge/errors.go
index 07e3911a56..dfee32c0e1 100644
--- a/libnetwork/drivers/bridge/errors.go
+++ b/libnetwork/drivers/bridge/errors.go
@@ -14,9 +14,6 @@ func (enip *ErrNoIPAddr) Error() string {
 	return "bridge has no IPv4 address configured"
 }
 
-// InternalError denotes the type of this error
-func (enip *ErrNoIPAddr) InternalError() {}
-
 // ErrInvalidGateway is returned when the user provided default gateway (v4/v6) is not valid.
 type ErrInvalidGateway struct{}
 
@@ -91,9 +88,6 @@ func (ipv4 *IPv4AddrAddError) Error() string {
 	return fmt.Sprintf("failed to add IPv4 address %s to bridge: %v", ipv4.IP, ipv4.Err)
 }
 
-// InternalError denotes the type of this error
-func (ipv4 *IPv4AddrAddError) InternalError() {}
-
 // IPv4AddrNoMatchError is returned when the bridge's IPv4 address does not match configured.
 type IPv4AddrNoMatchError struct {
 	IP    net.IP