diff --git a/req.go b/req.go
index 99dd1fb..62f666f 100644
--- a/req.go
+++ b/req.go
@@ -231,7 +231,7 @@ func applyFlagsToFilter(c *cli.Command, filter *nostr.Filter) error {
 	}
 	tags := make([][]string, 0, 5)
 	for _, tagFlag := range c.StringSlice("tag") {
-		spl := strings.Split(tagFlag, "=")
+		spl := strings.SplitN(tagFlag, "=", 2)
 		if len(spl) == 2 && len(spl[0]) == 1 {
 			tags = append(tags, spl)
 		} else {