diff --git a/sc2/src/sc2code/libs/sound/music.c b/sc2/src/sc2code/libs/sound/music.c
index 85efeb136..f9baf8568 100644
--- a/sc2/src/sc2code/libs/sound/music.c
+++ b/sc2/src/sc2code/libs/sound/music.c
@@ -14,6 +14,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
+#include <string.h>
 #include "file.h"
 #include "options.h"
 #include "sound.h"
diff --git a/sc2/src/sc2code/libs/sound/stream.c b/sc2/src/sc2code/libs/sound/stream.c
index 08d2bd81d..a2b96600f 100644
--- a/sc2/src/sc2code/libs/sound/stream.c
+++ b/sc2/src/sc2code/libs/sound/stream.c
@@ -15,6 +15,7 @@
  */
 
 #include <assert.h>
+#include <string.h>
 #include "sound.h"
 #include "libs/tasklib.h"
 #include "libs/log.h"
diff --git a/sc2/src/sc2code/libs/video/dukvid.c b/sc2/src/sc2code/libs/video/dukvid.c
index f15f28eb4..fe7d9c1e7 100644
--- a/sc2/src/sc2code/libs/video/dukvid.c
+++ b/sc2/src/sc2code/libs/video/dukvid.c
@@ -22,6 +22,7 @@
 #include "video.h"
 #include "dukvid.h"
 #include <stdio.h>
+#include <string.h>
 #include "libs/uio.h"
 #include "endian_uqm.h"
 
diff --git a/sc2/src/sc2code/libs/video/videodec.c b/sc2/src/sc2code/libs/video/videodec.c
index 60605b504..f006a5172 100644
--- a/sc2/src/sc2code/libs/video/videodec.c
+++ b/sc2/src/sc2code/libs/video/videodec.c
@@ -14,6 +14,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
+#include <string.h>
 #include "video.h"
 #include "videodec.h"
 #include "dukvid.h"