diff --git a/forked-test-driver b/forked-test-driver
index be73b80..1baaa84 100755
--- a/forked-test-driver
+++ b/forked-test-driver
@@ -109,7 +109,7 @@
 # to ameliorate tests themselves also writing to the log file. Our tests
 # don't, but others can (automake bug#35762).
 : >"$log_file"
-"$@" >>"$log_file" 2>&1
+"$@" 2>&1 | tee -a "$log_file"
 estatus=$?
 
 if test $enable_hard_errors = no && test $estatus -eq 99; then