diff --git a/src/testsuite/testsuite-log.h b/src/testsuite/testsuite-log.h
index 93f63c4742b661c4867e70f1da68497081571509..335d0444b6cc64c52a80fdc03b281d7cb7abe7fd 100644
--- a/src/testsuite/testsuite-log.h
+++ b/src/testsuite/testsuite-log.h
@@ -19,7 +19,8 @@ void testsuite_log_deinit(void);
 
 void testsuite_log_clear_messages(void);
 
-struct sieve_stringlist *testsuite_log_stringlist_create
-	(const struct sieve_runtime_env *renv, int index);
+struct sieve_stringlist *
+testsuite_log_stringlist_create(const struct sieve_runtime_env *renv,
+				int index);
 
 #endif