diff --git a/src/evdev-touchpad.c b/src/evdev-touchpad.c
index 4f9bb033..a21ae0b2 100644
--- a/src/evdev-touchpad.c
+++ b/src/evdev-touchpad.c
@@ -20,6 +20,8 @@
  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "config.h"
+
 #include <stdlib.h>
 #include <math.h>
 #include <string.h>
diff --git a/src/evdev.c b/src/evdev.c
index 9289b1cd..122a2d9b 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -20,6 +20,8 @@
  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "config.h"
+
 #include <stdlib.h>
 #include <string.h>
 #include <linux/input.h>
diff --git a/src/filter.c b/src/filter.c
index 91e588d2..a55ebf27 100644
--- a/src/filter.c
+++ b/src/filter.c
@@ -20,6 +20,8 @@
  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "config.h"
+
 #include <stdlib.h>
 #include <stdint.h>
 #include <limits.h>