diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index d8b59389..3f7d24ab 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -1,7 +1,5 @@
 add_subdirectory(gtest)
 
-include(CheckSymbolExists)
-
 set(TEST_MAIN_SRC test-main.cc gtest-extra.cc gtest-extra.h util.cc)
 add_library(test-main STATIC ${TEST_MAIN_SRC})
 target_include_directories(test-main PUBLIC
@@ -65,13 +63,7 @@ add_fmt_test(compile-test)
 add_fmt_test(printf-test)
 add_fmt_test(ranges-test ranges-odr-test.cc)
 add_fmt_test(no-builtin-types-test HEADER_ONLY)
-
 add_fmt_test(scan-test HEADER_ONLY)
-check_symbol_exists(strptime "time.h" HAVE_STRPTIME)
-if (HAVE_STRPTIME)
-  target_compile_definitions(scan-test PRIVATE FMT_HAVE_STRPTIME)
-endif ()
-
 add_fmt_test(std-test)
 try_compile(compile_result_unused
             ${CMAKE_CURRENT_BINARY_DIR}