diff --git a/.github/configs/nvidia-master.yaml b/.github/configs/nvidia-master.yaml
index 616aa6ff9..23d805c88 100644
--- a/.github/configs/nvidia-master.yaml
+++ b/.github/configs/nvidia-master.yaml
@@ -1892,10 +1892,12 @@ dsv4-fp4-b300-sglang-mtp:
     osl: 1024
     search-space:
     - { tp: 8, ep: 1, conc-start: 1, conc-end: 8, spec-decoding: mtp }
+    - { tp: 4, ep: 1, conc-start: 16, conc-end: 128, spec-decoding: mtp }
   - isl: 8192
     osl: 1024
     search-space:
     - { tp: 8, ep: 1, conc-start: 1, conc-end: 8, spec-decoding: mtp }
+    - { tp: 4, ep: 1, conc-start: 16, conc-end: 128, spec-decoding: mtp }
 
 qwen3.5-bf16-b200-sglang:
   image: lmsysorg/sglang:nightly-dev-20260216-d3bae71e
diff --git a/benchmarks/single_node/dsv4_fp4_b300_sglang_mtp.sh b/benchmarks/single_node/dsv4_fp4_b300_sglang_mtp.sh
index 767b9a8f9..a1b8043a6 100755
--- a/benchmarks/single_node/dsv4_fp4_b300_sglang_mtp.sh
+++ b/benchmarks/single_node/dsv4_fp4_b300_sglang_mtp.sh
@@ -132,6 +132,7 @@ run_benchmark_serving \
     --model "$MODEL" \
     --port "$PORT" \
     --backend vllm \
+    --dsv4 \
     --input-len "$ISL" \
     --output-len "$OSL" \
     --random-range-ratio "$RANDOM_RANGE_RATIO" \
diff --git a/perf-changelog.yaml b/perf-changelog.yaml
index 300d39c40..84d7a2b44 100644
--- a/perf-changelog.yaml
+++ b/perf-changelog.yaml
@@ -1903,3 +1903,10 @@
     - "ISL=8192: TP4 conc 4-64; DP4 (dp-attn) conc 128-1024; DP8 (dp-attn) conc 1024-8192"
   pr-link: https://github.com/SemiAnalysisAI/InferenceX/pull/1155
 
+- config-keys:
+    - dsv4-fp4-b300-sglang-mtp
+  description:
+    - "Fix missing line-continuation backslash before --dsv4 in run_benchmark_serving invocation"
+    - "Without the backslash bash truncated the bench command at --dsv4 and tried to exec the next line (--input-len ...) as a new command, breaking the run"
+  pr-link: https://github.com/SemiAnalysisAI/InferenceX/pull/1183
+