diff --git a/crypto/goolm/register.go b/crypto/goolm/register.go
index 80ed206b..17e7f207 100644
--- a/crypto/goolm/register.go
+++ b/crypto/goolm/register.go
@@ -16,6 +16,8 @@ import (
 )
 
 func init() {
+	olm.Driver = "goolm"
+
 	olm.GetVersion = func() (major, minor, patch uint8) {
 		return 3, 2, 15
 	}
diff --git a/crypto/libolm/register.go b/crypto/libolm/register.go
index 6aaec61e..06c07ea8 100644
--- a/crypto/libolm/register.go
+++ b/crypto/libolm/register.go
@@ -12,6 +12,8 @@ import (
 var pickleKey = []byte("maunium.net/go/mautrix/crypto/olm")
 
 func init() {
+	olm.Driver = "libolm"
+
 	olm.GetVersion = func() (major, minor, patch uint8) {
 		C.olm_get_library_version(
 			(*C.uint8_t)(unsafe.Pointer(&major)),
diff --git a/crypto/machine.go b/crypto/machine.go
index 83ce024d..da3ebe67 100644
--- a/crypto/machine.go
+++ b/crypto/machine.go
@@ -19,6 +19,7 @@ import (
 	"go.mau.fi/util/exzerolog"
 
 	"maunium.net/go/mautrix"
+	"maunium.net/go/mautrix/crypto/olm"
 	"maunium.net/go/mautrix/crypto/ssss"
 	"maunium.net/go/mautrix/event"
 	"maunium.net/go/mautrix/id"
@@ -159,6 +160,7 @@ func (mach *OlmMachine) Load(ctx context.Context) (err error) {
 	zerolog.Ctx(ctx).Debug().
 		Str("machine_ptr", fmt.Sprintf("%p", mach)).
 		Str("account_ptr", fmt.Sprintf("%p", mach.account.Internal)).
+		Str("olm_driver", olm.Driver).
 		Msg("Loaded olm account")
 	return nil
 }
diff --git a/crypto/olm/account.go b/crypto/olm/account.go
index 68393e8a..2ec5dd70 100644
--- a/crypto/olm/account.go
+++ b/crypto/olm/account.go
@@ -87,6 +87,8 @@ type Account interface {
 	RemoveOneTimeKeys(s Session) error
 }
 
+var Driver = "none"
+
 var InitBlankAccount func() Account
 var InitNewAccount func() (Account, error)
 var InitNewAccountFromPickled func(pickled, key []byte) (Account, error)