diff --git a/unittests/CMakeLists.txt b/unittests/CMakeLists.txt
index fac7038..94b7544 100644
--- a/unittests/CMakeLists.txt
+++ b/unittests/CMakeLists.txt
@@ -16,7 +16,13 @@
 
     set_property(TARGET ${test_name} PROPERTY FOLDER "Polly")
   endif()
-  target_link_libraries(${test_name} PRIVATE Polly)
+
+  if(LLVM_LINK_LLVM_DYLIB AND LLVM_POLLY_LINK_INTO_TOOLS)
+    # In this case Polly is already present in libLLVM,
+    # no need to link it again.
+  else()
+    target_link_libraries(${test_name} PRIVATE Polly)
+  endif()
 endfunction()
 
 add_subdirectory(Isl)