diff --git a/applets.c b/applets.c
index 515110372..c2ccb88fa 100644
--- a/applets.c
+++ b/applets.c
@@ -27,6 +27,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "busybox.h"
 
 #undef APPLET
diff --git a/applets/applets.c b/applets/applets.c
index 515110372..c2ccb88fa 100644
--- a/applets/applets.c
+++ b/applets/applets.c
@@ -27,6 +27,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "busybox.h"
 
 #undef APPLET
diff --git a/libbb/check_wildcard_match.c b/libbb/check_wildcard_match.c
index 7bd3c7998..ab856797b 100644
--- a/libbb/check_wildcard_match.c
+++ b/libbb/check_wildcard_match.c
@@ -26,6 +26,7 @@
  */
 
 #include <stdio.h>
+#include <string.h>
 #include "libbb.h"
 
 
diff --git a/libbb/chomp.c b/libbb/chomp.c
index cbd3d04bc..d2f6d5e6f 100644
--- a/libbb/chomp.c
+++ b/libbb/chomp.c
@@ -26,6 +26,7 @@
  */
 
 #include <stdio.h>
+#include <string.h>
 #include "libbb.h"
 
 
diff --git a/libbb/find_mount_point.c b/libbb/find_mount_point.c
index 27322f7f0..2d9481a69 100644
--- a/libbb/find_mount_point.c
+++ b/libbb/find_mount_point.c
@@ -26,6 +26,7 @@
  */
 
 #include <stdio.h>
+#include <string.h>
 #include "libbb.h"
 
 
diff --git a/libbb/inode_hash.c b/libbb/inode_hash.c
index db68025dd..790af8f31 100644
--- a/libbb/inode_hash.c
+++ b/libbb/inode_hash.c
@@ -27,6 +27,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "libbb.h"
 
 #define HASH_SIZE	311		/* Should be prime */