diff --git a/libraries/build_mysqlconnector.sh b/libraries/build_mysqlconnector.sh
index fb1f199..dd9fea1 100755
--- a/libraries/build_mysqlconnector.sh
+++ b/libraries/build_mysqlconnector.sh
@@ -1,4 +1,16 @@
-cd mysqlconnector/build
+cd mysqlconnector
+HEADER=$(cat cdk/foundation/connection_openssl.cc)
+if ! [ "${HEADER:0:34}" == "#if !defined(SSL_ERROR_WANT_ASYNC)" ]; then
+	echo "Creating new one!"
+	echo "#if !defined(SSL_ERROR_WANT_ASYNC)
+	#define SSL_ERROR_WANT_ASYNC 0x100000000
+#endif
+#if !defined(SSL_ERROR_WANT_ASYNC_JOB)
+	#define SSL_ERROR_WANT_ASYNC_JOB 0x100000000
+#endif
+`cat cdk/foundation/connection_openssl.cc`" > cdk/foundation/connection_openssl.cc
+fi
+cd build
 cmake .. -DCMAKE_CXX_FLAGS="-static-libgcc -static-libstdc++ -I../../boringssl/include/" -DWITH_JDBC=ON -DWITH_SSL="`pwd`/../../boringssl/" -DOPENSSL_ROOT_DIR="`pwd`/../../boringssl/"
 make -j 12
 sudo make install