diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c
index 0984e7d4b..b12569832 100644
--- a/scripts/basic/docproc.c
+++ b/scripts/basic/docproc.c
@@ -39,6 +39,7 @@
 #include <limits.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <alloca.h>
 
 /* exitstatus is used to keep track of any failing calls to kernel-doc,
  * but execution continues. */
diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index f27a17984..165a8c39d 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -113,6 +113,7 @@
 #include <limits.h>
 #include <ctype.h>
 #include <arpa/inet.h>
+#include <alloca.h>
 
 /* bbox: not needed
 #define INT_CONF ntohl(0x434f4e46)