diff --git a/src/add-ons/media/media-add-ons/multi_audio/MultiAudioNode.cpp b/src/add-ons/media/media-add-ons/multi_audio/MultiAudioNode.cpp
index 4b4345e595..b13dc78740 100644
--- a/src/add-ons/media/media-add-ons/multi_audio/MultiAudioNode.cpp
+++ b/src/add-ons/media/media-add-ons/multi_audio/MultiAudioNode.cpp
@@ -49,6 +49,7 @@
 #include "debug.h"
 
 #include <stdio.h>
+#include <string.h>
 
 const char * multi_string[] =
 {
diff --git a/src/kits/game/GameSoundDevice.cpp b/src/kits/game/GameSoundDevice.cpp
index 7bb0e8e74e..b178db6110 100644
--- a/src/kits/game/GameSoundDevice.cpp
+++ b/src/kits/game/GameSoundDevice.cpp
@@ -26,8 +26,9 @@
 //					this time. Use at your own risk.
 //------------------------------------------------------------------------------
 
-#include <stdio.h>
 #include <malloc.h>
+#include <stdio.h>
+#include <string.h>
 
 #include <List.h>
 #include <MediaRoster.h>
diff --git a/src/kits/media/SoundPlayer.cpp b/src/kits/media/SoundPlayer.cpp
index 0690f1fa33..d6257028e3 100644
--- a/src/kits/media/SoundPlayer.cpp
+++ b/src/kits/media/SoundPlayer.cpp
@@ -7,6 +7,7 @@
 #include <MediaRoster.h>
 #include <ParameterWeb.h>
 #include <math.h>
+#include <string.h>
 
 #include "debug.h"
 #include "SoundPlayNode.h"
diff --git a/src/tests/kits/media/nodetest/main.cpp b/src/tests/kits/media/nodetest/main.cpp
index c9ca0cd446..a6f686d386 100644
--- a/src/tests/kits/media/nodetest/main.cpp
+++ b/src/tests/kits/media/nodetest/main.cpp
@@ -1,3 +1,4 @@
+#include <string.h>
 #include <Application.h>
 #include <MediaRoster.h>
 #include <TimeSource.h>