diff --git a/crates/ws_load_test/src/network.rs b/crates/ws_load_test/src/network.rs
index 09eee0d..cafa52b 100644
--- a/crates/ws_load_test/src/network.rs
+++ b/crates/ws_load_test/src/network.rs
@@ -135,9 +135,7 @@ impl Connection {
                         r.answer_offer_id = Some(offer_id);
                         r.answer = Some(RtcAnswer {
                             t: RtcAnswerType::Answer,
-                            sdp: ::serde_json::json!(
-                                {"sdp": "abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-"}
-                            ),
+                            sdp: "abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-".into()
                         });
                         r.event = None;
                         r.offers = None;
diff --git a/crates/ws_load_test/src/utils.rs b/crates/ws_load_test/src/utils.rs
index a8dd488..90850b5 100644
--- a/crates/ws_load_test/src/utils.rs
+++ b/crates/ws_load_test/src/utils.rs
@@ -52,9 +52,7 @@ fn create_announce_request(
             offer_id: OfferId(rng.gen()),
             offer: RtcOffer {
                 t: RtcOfferType::Offer,
-                sdp: ::serde_json::json!(
-                    {"sdp": "abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-"}
-                )
+                sdp: "abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-abcdefg-".into()
             },
         })
     }
diff --git a/crates/ws_protocol/benches/bench_deserialize_announce_request.rs b/crates/ws_protocol/benches/bench_deserialize_announce_request.rs
index a2f5e2b..429c125 100644
--- a/crates/ws_protocol/benches/bench_deserialize_announce_request.rs
+++ b/crates/ws_protocol/benches/bench_deserialize_announce_request.rs
@@ -17,7 +17,7 @@ pub fn bench(c: &mut Criterion) {
             AnnounceRequestOffer {
                 offer: RtcOffer {
                     t: RtcOfferType::Offer,
-                    sdp: ::serde_json::json!({ "sdp": "abcdef" }),
+                    sdp: "abcdef".into(),
                 },
                 offer_id,
             }
@@ -35,7 +35,7 @@ pub fn bench(c: &mut Criterion) {
         numwant: Some(offers_len),
         answer: Some(RtcAnswer {
             t: RtcAnswerType::Answer,
-            sdp: ::serde_json::json!({ "sdp": "abcdef" }),
+            sdp: "abcdef".into(),
         }),
         answer_to_peer_id: Some(peer_id),
         answer_offer_id: Some(OfferId(info_hash.0)),
diff --git a/crates/ws_protocol/src/common.rs b/crates/ws_protocol/src/common.rs
index ea396a9..e426f70 100644
--- a/crates/ws_protocol/src/common.rs
+++ b/crates/ws_protocol/src/common.rs
@@ -50,7 +50,7 @@ pub struct RtcOffer {
     /// Always "offer"
     #[serde(rename = "type")]
     pub t: RtcOfferType,
-    pub sdp: ::serde_json::Value,
+    pub sdp: String,
 }
 
 /// Nested structure with SDP answer from https://www.npmjs.com/package/simple-peer
@@ -61,7 +61,7 @@ pub struct RtcAnswer {
     /// Always "answer"
     #[serde(rename = "type")]
     pub t: RtcAnswerType,
-    pub sdp: ::serde_json::Value,
+    pub sdp: String,
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
diff --git a/crates/ws_protocol/src/lib.rs b/crates/ws_protocol/src/lib.rs
index a3b61e7..c0b38a5 100644
--- a/crates/ws_protocol/src/lib.rs
+++ b/crates/ws_protocol/src/lib.rs
@@ -38,13 +38,13 @@ mod tests {
     fn rtc_offer() -> RtcOffer {
         RtcOffer {
             t: RtcOfferType::Offer,
-            sdp: ::serde_json::json!({ "sdp": "test" }),
+            sdp: "test".into(),
         }
     }
     fn rtc_answer() -> RtcAnswer {
         RtcAnswer {
             t: RtcAnswerType::Answer,
-            sdp: ::serde_json::json!({ "sdp": "test" }),
+            sdp: "test".into(),
         }
     }