diff --git a/test/pasta_options/log_to_file b/test/pasta_options/log_to_file
index f100216..fe50e50 100644
--- a/test/pasta_options/log_to_file
+++ b/test/pasta_options/log_to_file
@@ -37,8 +37,9 @@ passt	./pasta -l __LOG_FILE__ -- /bin/true
 check	[ -s __LOG_FILE__ ]
 
 test	Log truncated on creation
-passt	./pasta -l __LOG_FILE__ -- /bin/true
-check	[ $(cat __LOG_FILE__ | wc -l) -eq 1 ]
+passt	./pasta -l __LOG_FILE__ -- /bin/true & wait
+pout	PID2 echo $!
+check	head -1 __LOG_FILE__ | grep '^pasta .* [(]__PID2__[)]$'
 
 test	Maximum log size
 passtb	./pasta --config-net -d -f -l __LOG_FILE__ --log-size $((100 * 1024)) -- sh -c 'while true; do tcp_crr --nolog -P 10001 -C 10002 -6; done'