diff --git a/httplib.h b/httplib.h
index f401a9a..e2766cc 100644
--- a/httplib.h
+++ b/httplib.h
@@ -51,7 +51,10 @@
 #ifndef CPPHTTPLIB_THREAD_POOL_COUNT
 // if hardware_concurrency() outputs 0 we still wants to use threads for this.
 // -1 because we have one thread already in the main function.
-#define CPPHTTPLIB_THREAD_POOL_COUNT std::thread::hardware_concurrency() ? std::thread::hardware_concurrency()-1 : 2
+#define CPPHTTPLIB_THREAD_POOL_COUNT                                           \
+  (std::thread::hardware_concurrency()                                         \
+       ? std::thread::hardware_concurrency() - 1                               \
+       : 2)
 #endif
 
 /*