diff --git a/internal/api/grpc/server/gateway.go b/internal/api/grpc/server/gateway.go
index 43947917a2..ca7579ee89 100644
--- a/internal/api/grpc/server/gateway.go
+++ b/internal/api/grpc/server/gateway.go
@@ -28,6 +28,7 @@ import (
 
 const (
 	mimeWildcard = "*/*"
+	UnknownPath  = "UNKNOWN_PATH"
 )
 
 var (
@@ -274,7 +275,11 @@ func grpcCredentials(tlsConfig *tls.Config) credentials.TransportCredentials {
 func setRequestURIPattern(ctx context.Context) {
 	pattern, ok := runtime.HTTPPathPattern(ctx)
 	if !ok {
-		return
+		// As all unmatched paths will be handled by the gateway, any request not matching a pattern,
+		// means there's no route to the path.
+		// To prevent high cardinality on metrics and tracing, we want to make sure we don't record
+		// the actual path as name (it will still be recorded explicitly in the span http info).
+		pattern = UnknownPath
 	}
 	span := trace.SpanFromContext(ctx)
 	span.SetName(pattern)