diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9e8a21feaf..2273dc0402 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -42,7 +42,7 @@ include(CheckCXXCompilerFlag)
 
 # We call fread numerous times without checking return values.  Hide the
 # corresponding compiler warnings if the compiler supports doing so.
-CHECK_CXX_COMPILER_FLAG(-Wno-unused-result NO_UNUSED_RESULT)
+CHECK_CXX_COMPILER_FLAG(-Wunused-result NO_UNUSED_RESULT)
 if(NO_UNUSED_RESULT)
 	add_definitions(-Wno-unused-result)
 endif(NO_UNUSED_RESULT)
diff --git a/Source/Core/Common/Src/Thread.h b/Source/Core/Common/Src/Thread.h
index 04e6214b46..e93cf20160 100644
--- a/Source/Core/Common/Src/Thread.h
+++ b/Source/Core/Common/Src/Thread.h
@@ -63,7 +63,7 @@
 //for (clock_gettime|gettimeofday) and struct time(spec|val)
 #include <unistd.h>
 #include <time.h>
-#if !defined(_POSIX_TIMERS) || _POSIX_TIMERS == 0
+#if !defined(_POSIX_TIMERS) || _POSIX_TIMERS == 0 || !defined(_POSIX_MONOTONIC_CLOCK)
 #define USE_GETTIMEOFDAY
 #include <sys/time.h>
 #endif
diff --git a/Source/Core/Common/Src/Timer.cpp b/Source/Core/Common/Src/Timer.cpp
index 6583202f99..1533ae71b5 100644
--- a/Source/Core/Common/Src/Timer.cpp
+++ b/Source/Core/Common/Src/Timer.cpp
@@ -23,7 +23,7 @@
 #include <sys/timeb.h>
 #else
 #include <unistd.h>
-#if !defined(_POSIX_TIMERS) || _POSIX_TIMERS == 0
+#if !defined(_POSIX_TIMERS) || _POSIX_TIMERS == 0 || !defined(_POSIX_MONOTONIC_CLOCK)
 #define USE_GETTIMEOFDAY
 #include <sys/time.h>
 #endif