diff --git a/getpagesize.c b/getpagesize.c
index a4e7164..794a8ef 100644
--- a/getpagesize.c
+++ b/getpagesize.c
@@ -5,6 +5,7 @@
  * terms and conditions.
  */
 #include <unistd.h>
+#include "runtime_reqs.h"

 int getpagesize(void)
 {
diff --git a/strcasecmp.c b/strcasecmp.c
index a04f950..15862bb 100644
--- a/strcasecmp.c
+++ b/strcasecmp.c
@@ -4,6 +4,7 @@
  * Please see the file LICENSE, distributed with this software, for specific
  * terms and conditions.
  */
+#include <ctype.h>
 #include <strings.h>

 int strcasecmp(const char *s1, const char *s2)