diff --git a/src/add-ons/kernel/drivers/network/pegasus/driver.c b/src/add-ons/kernel/drivers/network/pegasus/driver.c
index 2c2914bf54..9ffee0b88a 100644
--- a/src/add-ons/kernel/drivers/network/pegasus/driver.c
+++ b/src/add-ons/kernel/drivers/network/pegasus/driver.c
@@ -11,6 +11,7 @@
 #include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "driver.h"
 #include "usbdevs.h"
 
diff --git a/src/add-ons/kernel/drivers/network/pegasus/if_aue.c b/src/add-ons/kernel/drivers/network/pegasus/if_aue.c
index 8022cb3e03..4f8432b139 100644
--- a/src/add-ons/kernel/drivers/network/pegasus/if_aue.c
+++ b/src/add-ons/kernel/drivers/network/pegasus/if_aue.c
@@ -40,6 +40,7 @@
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <string.h>
 #include "driver.h"
 #include "usbdevs.h"