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-rw-r--r--rpc/args.go2
1 files changed, 1 insertions, 1 deletions
diff --git a/rpc/args.go b/rpc/args.go
index 8df483f08..4bd48e6d6 100644
--- a/rpc/args.go
+++ b/rpc/args.go
@@ -1061,7 +1061,7 @@ func (args *WhisperFilterArgs) UnmarshalJSON(b []byte) (err error) {
for idx, field := range list {
switch value := field.(type) {
case nil:
- topics[idx] = []string{""}
+ topics[idx] = []string{}
case string:
topics[idx] = []string{value}