diff --git a/x/knowledge/types/errors.go b/x/knowledge/types/errors.go
index 00ba8828..69cb2d11 100644
--- a/x/knowledge/types/errors.go
+++ b/x/knowledge/types/errors.go
@@ -9,4 +9,5 @@ import (
 // x/knowledge module sentinel errors.
 var (
 	ErrEntityAlreadyExists = sdkerrors.Register(ModuleName, 1100, "entity already exists")
+	ErrInvalidURI          = sdkerrors.Register(ModuleName, 1101, "invalid uri")
 )
diff --git a/x/knowledge/types/message_trigger_service.go b/x/knowledge/types/message_trigger_service.go
index e4ded6dd..32854f87 100644
--- a/x/knowledge/types/message_trigger_service.go
+++ b/x/knowledge/types/message_trigger_service.go
@@ -1,6 +1,8 @@
 package types
 
 import (
+	"net/url"
+
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 )
@@ -42,5 +44,9 @@ func (msg *MsgTriggerService) ValidateBasic() error {
 	if err != nil {
 		return sdkerrors.Wrapf(sdkerrors.ErrInvalidAddress, "invalid creator address (%s)", err)
 	}
+
+	if _, err := url.Parse(msg.Uri); err != nil {
+		return sdkerrors.Wrapf(ErrInvalidURI, "invalid service uri (%s)", err)
+	}
 	return nil
 }
diff --git a/x/knowledge/types/message_trigger_service_test.go b/x/knowledge/types/message_trigger_service_test.go
index acfc6fd0..966bfa7d 100644
--- a/x/knowledge/types/message_trigger_service_test.go
+++ b/x/knowledge/types/message_trigger_service_test.go
@@ -26,6 +26,20 @@ func TestMsgTriggerService_ValidateBasic(t *testing.T) {
 				Creator: sample.AccAddress(),
 			},
 		},
+		{
+			name: "invalid uri",
+			msg: MsgTriggerService{
+				Creator: sample.AccAddress(),
+				Uri:     "é:// ",
+			},
+			err: ErrInvalidURI,
+		}, {
+			name: "valid uri",
+			msg: MsgTriggerService{
+				Creator: sample.AccAddress(),
+				Uri:     "okp4:service#coucou?target=okp4",
+			},
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {