diff --git a/core/sme/inc/csr_internal.h b/core/sme/inc/csr_internal.h
index 5ae786ff659b..2a2775a898b1 100644
--- a/core/sme/inc/csr_internal.h
+++ b/core/sme/inc/csr_internal.h
@@ -1037,7 +1037,6 @@ uint8_t csr_construct_wapi_ie(struct mac_context *mac, uint32_t sessionId,
 void csr_set_cfg_privacy(struct mac_context *mac,
 			 struct csr_roam_profile *pProfile,
 			 bool fPrivacy);
-int8_t csr_get_infra_session_id(struct mac_context *mac);
 uint8_t csr_get_infra_operation_channel(struct mac_context *mac,
 							uint8_t sessionId);
 bool csr_is_session_client_and_connected(struct mac_context *mac,
diff --git a/core/sme/src/csr/csr_util.c b/core/sme/src/csr/csr_util.c
index 3053f5669b42..45ad789ab525 100644
--- a/core/sme/src/csr/csr_util.c
+++ b/core/sme/src/csr/csr_util.c
@@ -716,22 +716,6 @@ bool csr_is_any_session_in_connect_state(struct mac_context *mac)
 	return fRc;
 }
 
-int8_t csr_get_infra_session_id(struct mac_context *mac)
-{
-	uint8_t i;
-	int8_t sessionid = -1;
-
-	for (i = 0; i < CSR_ROAM_SESSION_MAX; i++) {
-		if (CSR_IS_SESSION_VALID(mac, i)
-		    && csr_is_conn_state_infra(mac, i)) {
-			sessionid = i;
-			break;
-		}
-	}
-
-	return sessionid;
-}
-
 uint8_t csr_get_infra_operation_channel(struct mac_context *mac, uint8_t sessionId)
 {
 	uint8_t channel;