diff --git a/scripts/bench-loss.sh b/scripts/bench-loss.sh
index 0a4780e..7ea30c1 100755
--- a/scripts/bench-loss.sh
+++ b/scripts/bench-loss.sh
@@ -95,7 +95,7 @@ snapshot_to() {
     curl -s http://localhost:9100/metrics > "$1"
 }
 get_value() {
-    awk -v pat="$2" '$0 ~ "^" pat " " { print $NF; exit }' "$1"
+    awk -v pat="$2" '$1 == pat { print $NF; exit }' "$1"
 }
 
 mkdir -p "$(dirname "$OUT_CSV")"
@@ -141,8 +141,8 @@ for entities in "${ENTITIES_LIST[@]}"; do
 
         sleep "$WARMUP_S"
         snapshot_to "$BEFORE"
-        rec_before=$(get_value "$BEFORE" 'substrate_received_total\{tier="t1"\}')
-        drop_before=$(get_value "$BEFORE" 'substrate_dropped_total\{tier="t1"\}')
+        rec_before=$(get_value "$BEFORE" 'substrate_received_total{tier="t1"}')
+        drop_before=$(get_value "$BEFORE" 'substrate_dropped_total{tier="t1"}')
 
         sleep "$WINDOW_S"
 
@@ -153,13 +153,13 @@ for entities in "${ENTITIES_LIST[@]}"; do
             SIM_PID=""
         fi
 
-        rec_after=$(get_value "$AFTER" 'substrate_received_total\{tier="t1"\}')
-        drop_after=$(get_value "$AFTER" 'substrate_dropped_total\{tier="t1"\}')
-        p50=$(get_value "$AFTER" 'substrate_latency_us\{tier="t1",quantile="0.5"\}')
-        p99=$(get_value "$AFTER" 'substrate_latency_us\{tier="t1",quantile="0.99"\}')
-        p999=$(get_value "$AFTER" 'substrate_latency_us\{tier="t1",quantile="0.999"\}')
-        t2_p99=$(get_value "$AFTER" 'substrate_latency_us\{tier="t2",quantile="0.99"\}')
-        t3_p99=$(get_value "$AFTER" 'substrate_latency_us\{tier="t3",quantile="0.99"\}')
+        rec_after=$(get_value "$AFTER" 'substrate_received_total{tier="t1"}')
+        drop_after=$(get_value "$AFTER" 'substrate_dropped_total{tier="t1"}')
+        p50=$(get_value "$AFTER" 'substrate_latency_us{tier="t1",quantile="0.5"}')
+        p99=$(get_value "$AFTER" 'substrate_latency_us{tier="t1",quantile="0.99"}')
+        p999=$(get_value "$AFTER" 'substrate_latency_us{tier="t1",quantile="0.999"}')
+        t2_p99=$(get_value "$AFTER" 'substrate_latency_us{tier="t2",quantile="0.99"}')
+        t3_p99=$(get_value "$AFTER" 'substrate_latency_us{tier="t3",quantile="0.99"}')
 
         tick_hz=$(get_value "$AFTER" 'substrate_tick_hz')
         rss=$(get_value "$AFTER" 'substrate_rss_bytes')