--- progs/sucap.c
+++ progs/sucap.c
@@ -11,6 +11,7 @@
 #include <sys/types.h>
 #include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 #undef _POSIX_SOURCE
 #include <sys/capability.h>
 #include <pwd.h>
--- progs/execcap.c
+++ progs/execcap.c
@@ -10,6 +10,7 @@
 #include <sys/types.h>
 #include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <sys/capability.h>
 #include <unistd.h>
 #include <string.h>