diff --git a/tests/data_files/early_data.txt b/tests/data_files/early_data.txt
new file mode 100644
index 0000000..f0084c3
--- /dev/null
+++ b/tests/data_files/early_data.txt
@@ -0,0 +1,3 @@
+EarlyData context: line 0                                                    lf
+EarlyData context: line 1                                                    lf
+EarlyData context: If it appear, that means early_data success
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index efcbd26..2ff097f 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -72,6 +72,7 @@
 : ${MBEDTLS_TEST_OUTCOME_FILE=}
 : ${MBEDTLS_TEST_CONFIGURATION:="$(guess_config_name)"}
 : ${MBEDTLS_TEST_PLATFORM:="$(uname -s | tr -c \\n0-9A-Za-z _)-$(uname -m | tr -c \\n0-9A-Za-z _)"}
+: ${EARLY_DATA_INPUT:=data_files/early_data.txt}
 
 O_SRV="$OPENSSL s_server -www -cert data_files/server5.crt -key data_files/server5.key"
 O_CLI="echo 'GET / HTTP/1.0' | $OPENSSL s_client"