diff --git a/trunk/research/librtmp/Makefile b/trunk/research/librtmp/Makefile
index e204bf8f4..6bdcf976e 100755
--- a/trunk/research/librtmp/Makefile
+++ b/trunk/research/librtmp/Makefile
@@ -69,7 +69,7 @@ ifeq ($(GCC), mipsel-openwrt-linux-gcc)
 endif
 # for ssl or nossl
 ifeq ($(HANDSHAKE), SSL)
-    SRS_LIBSSL_L = $(SRS_OBJS)/openssl/lib/libssl.a $(SRS_OBJS)/openssl/lib/libcrypto.a -lpthread
+    SRS_LIBSSL_L = $(SRS_OBJS)/openssl/lib/libssl.a $(SRS_OBJS)/openssl/lib/libcrypto.a
 endif
 ifneq ($(shell test -f $(SRS_OBJS)/openssl/lib/libssl.a && echo yes), yes)
     SRS_LIBSSL_L = -lssl -lcrypto