diff --git a/runtime/runtime-core/common/src/aws/smithy/kotlin/runtime/businessmetrics/BusinessMetricsUtils.kt b/runtime/runtime-core/common/src/aws/smithy/kotlin/runtime/businessmetrics/BusinessMetricsUtils.kt
index 3a3571407..637c906df 100644
--- a/runtime/runtime-core/common/src/aws/smithy/kotlin/runtime/businessmetrics/BusinessMetricsUtils.kt
+++ b/runtime/runtime-core/common/src/aws/smithy/kotlin/runtime/businessmetrics/BusinessMetricsUtils.kt
@@ -76,5 +76,5 @@ public enum class SmithyBusinessMetric(public override val identifier: String) :
     PROTOCOL_RPC_V2_CBOR("M"),
     SERVICE_ENDPOINT_OVERRIDE("N"),
     ACCOUNT_ID_BASED_ENDPOINT("O"),
-    SIGV4A_SIGNING("P"),
+    SIGV4A_SIGNING("S"),
 }