diff --git a/folly/fibers/detail/AtomicBatchDispatcher.cpp b/folly/fibers/detail/AtomicBatchDispatcher.cpp
index cc93904f207..bfc20de6df5 100644
--- a/folly/fibers/detail/AtomicBatchDispatcher.cpp
+++ b/folly/fibers/detail/AtomicBatchDispatcher.cpp
@@ -19,6 +19,7 @@
 #include <cassert>
 
 #include <fmt/core.h>
+#include <fmt/format.h>
 
 namespace folly {
 namespace fibers {