diff --git a/CMakeLists.txt b/CMakeLists.txt
index 389af1a5c..74edc23ed 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -494,12 +494,12 @@ endif()
 
 set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
 
-if(NOT IOS AND NOT ANDROID)
+if(NOT IOS)
 	find_package(Threads REQUIRED)
 endif()
 
 if(NOT WIN32)
-	check_library_exists(pthread pthread_mutex_timedlock "" HAVE_PTHREAD_MUTEX_TIMEDLOCK)
+	check_symbol_exists(pthread_mutex_timedlock pthread.h HAVE_PTHREAD_MUTEX_TIMEDLOCK)
 endif()
 
 if(WITH_VALGRIND_MEMCHECK)
diff --git a/winpr/CMakeLists.txt b/winpr/CMakeLists.txt
index 00c8b30cb..846eb027c 100644
--- a/winpr/CMakeLists.txt
+++ b/winpr/CMakeLists.txt
@@ -70,7 +70,7 @@ if(FREERDP_BUILD)
 else()
 	set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
 
-	if(NOT IOS AND NOT ANDROID)
+	if(NOT IOS)
 		find_package(Threads REQUIRED)
 	endif()
 
@@ -99,7 +99,7 @@ else()
 	endif()
 
 	if(NOT WIN32)
-		check_library_exists(pthread pthread_mutex_timedlock "" HAVE_PTHREAD_MUTEX_TIMEDLOCK)
+		check_symbol_exists(pthread pthread_mutex_timedlock "" HAVE_PTHREAD_MUTEX_TIMEDLOCK)
 	endif()
 
 	set(OPENSSL_FEATURE_TYPE "OPTIONAL")