diff --git a/trunk/configure b/trunk/configure
index 605fc2db8..48bf155fc 100755
--- a/trunk/configure
+++ b/trunk/configure
@@ -84,7 +84,7 @@ END
 # enable gdb debug
 GDBDebug=" -g -O0"
 # the warning level.
-WarnLevel=" -Wall"
+WarnLevel=" -Wall -Wno-deprecated-declarations"
 # the compile standard.
 CppStd="-ansi"
 if [[ $SRS_CXX11 == YES ]]; then
diff --git a/trunk/src/app/srs_app_rtc_dtls.cpp b/trunk/src/app/srs_app_rtc_dtls.cpp
index 838bcb9ce..80c7cc0ae 100644
--- a/trunk/src/app/srs_app_rtc_dtls.cpp
+++ b/trunk/src/app/srs_app_rtc_dtls.cpp
@@ -281,7 +281,6 @@ SSL_CTX* SrsDtls::build_dtls_ctx()
 #endif
 
     if (_srs_rtc_dtls_certificate->is_ecdsa()) { // By ECDSA, https://stackoverflow.com/a/6006898
-
 #if OPENSSL_VERSION_NUMBER >= 0x10002000L // v1.0.2
         // For ECDSA, we could set the curves list.
         // @see https://www.openssl.org/docs/man1.0.2/man3/SSL_CTX_set1_curves_list.html