diff --git a/newlib/libc/machine/amdgcn/abort.c b/newlib/libc/machine/amdgcn/abort.c
index ccbca726a..ca9a0a33f 100644
--- a/newlib/libc/machine/amdgcn/abort.c
+++ b/newlib/libc/machine/amdgcn/abort.c
@@ -13,7 +13,7 @@
  * they apply.
  */
 
-#include <stdlib.h>
+#include <unistd.h>
 #include <signal.h>
 #include "exit-value.h"
 
diff --git a/newlib/libc/machine/amdgcn/getreent.c b/newlib/libc/machine/amdgcn/getreent.c
index acf10a97f..5a28aa406 100644
--- a/newlib/libc/machine/amdgcn/getreent.c
+++ b/newlib/libc/machine/amdgcn/getreent.c
@@ -3,6 +3,7 @@
 #include <reent.h>
 #include <stdint.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 /* Copied from the HSA documentation.  */
 typedef struct hsa_signal_s {
diff --git a/newlib/libc/sys/amdgcn/fstat.c b/newlib/libc/sys/amdgcn/fstat.c
index b78715857..2526967ef 100644
--- a/newlib/libc/sys/amdgcn/fstat.c
+++ b/newlib/libc/sys/amdgcn/fstat.c
@@ -13,6 +13,8 @@
  * they apply.
  */
 
+#include <sys/types.h>
+#include <sys/stat.h>
 #include <unistd.h>
 #include <errno.h>