diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 2c22a13..d60c650 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -73,6 +73,9 @@ add_test(multifile_test multifile_test)
 
 add_executable(fwd_impl_test fwd_test.cpp impl_test.cpp)
 target_link_libraries(fwd_impl_test ghc_filesystem)
+if(${CMAKE_SYSTEM_NAME} MATCHES "(SunOS|Solaris)")
+    target_link_libraries(filesystem_test xnet)
+endif()
 target_compile_options(fwd_impl_test PRIVATE
         $<$<BOOL:${EMSCRIPTEN}>:-s DISABLE_EXCEPTION_CATCHING=0>
         $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Werror>