diff --git a/Runtimes/Core/Concurrency/CMakeLists.txt b/Runtimes/Core/Concurrency/CMakeLists.txt
index a846354ad3bd0..ab64f63019b78 100644
--- a/Runtimes/Core/Concurrency/CMakeLists.txt
+++ b/Runtimes/Core/Concurrency/CMakeLists.txt
@@ -24,7 +24,7 @@ add_library(swift_Concurrency
   ThreadingError.cpp
   TracingSignpost.cpp
   "${PROJECT_SOURCE_DIR}/CompatibilityOverride/CompatibilityOverride.cpp"
-  "${PROJECT_SOURCE_DIR}/linker-support/magic-symbols-for-install-name.c"
+  "./linker-support/magic-symbols-for-install-name.c"
   Actor.swift
   AsyncCompactMapSequence.swift
   AsyncDropFirstSequence.swift