diff --git a/stdlib/public/Concurrency/TaskGroup.cpp b/stdlib/public/Concurrency/TaskGroup.cpp
index 2af32ccd1d945..1395dc10716ea 100644
--- a/stdlib/public/Concurrency/TaskGroup.cpp
+++ b/stdlib/public/Concurrency/TaskGroup.cpp
@@ -53,10 +53,6 @@
 #include <io.h>
 #endif
 
-#if defined(__wasi__)
-#include <unistd.h>
-#endif
-
 #include <assert.h>
 #if SWIFT_CONCURRENCY_ENABLE_DISPATCH
 #include <dispatch/dispatch.h>