diff --git a/daemon/cpugovctl.c b/daemon/cpugovctl.c
index 92c0dcf..745e9b1 100644
--- a/daemon/cpugovctl.c
+++ b/daemon/cpugovctl.c
@@ -28,10 +28,14 @@ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.
 
  */
+
+#define _GNU_SOURCE
+
 #include "logging.h"
 
 #include <ctype.h>
 #include <dirent.h>
+#include <linux/limits.h>
 #include <sys/types.h>
 
 #define MAX_GOVERNORS 128
diff --git a/daemon/gamemode.c b/daemon/gamemode.c
index 57128eb..80fcc2f 100644
--- a/daemon/gamemode.c
+++ b/daemon/gamemode.c
@@ -28,6 +28,9 @@ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.
 
  */
+
+#define _GNU_SOURCE
+
 #include "gamemode.h"
 #include "governors.h"
 #include "logging.h"
diff --git a/daemon/governors.c b/daemon/governors.c
index 8a21f81..2cf30e7 100644
--- a/daemon/governors.c
+++ b/daemon/governors.c
@@ -28,6 +28,9 @@ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.
 
  */
+
+#define _GNU_SOURCE
+
 #include "governors.h"
 #include "logging.h"
 
diff --git a/daemon/main.c b/daemon/main.c
index 58b6421..55863b7 100644
--- a/daemon/main.c
+++ b/daemon/main.c
@@ -28,7 +28,11 @@ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.
 
  */
+
 // Simple daemon to allow user space programs to control the CPU governors
+
+#define _GNU_SOURCE
+
 #include "daemonize.h"
 #include "dbus_messaging.h"
 #include "gamemode.h"