diff --git a/projects/CMakeLists.txt b/projects/CMakeLists.txt
index c98a8824773..47ceb9ea2f3 100644
--- a/projects/CMakeLists.txt
+++ b/projects/CMakeLists.txt
@@ -30,8 +30,8 @@ if(${LLVM_BUILD_RUNTIME})
     # Add the projects in reverse order of their dependencies so that the
     # dependent projects can see the target names of their dependencies.
     add_llvm_external_project(libunwind)
-    add_llvm_external_project(libcxxabi)
     add_llvm_external_project(pstl)
+    add_llvm_external_project(libcxxabi)
     add_llvm_external_project(libcxx)
   endif()
   if(NOT LLVM_BUILD_EXTERNAL_COMPILER_RT)