diff --git a/sys/include/puf_sram.h b/sys/include/puf_sram.h
index 33c4a9fd0d..4c98dcd6ff 100644
--- a/sys/include/puf_sram.h
+++ b/sys/include/puf_sram.h
@@ -58,8 +58,9 @@
 extern "C" {
 #endif
 
-#include "hashes.h"
-#include "thread.h"
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
 
 /**
  * @brief SRAM length considered for seeding
diff --git a/sys/puf_sram/puf_sram.c b/sys/puf_sram/puf_sram.c
index e4a5a0c404..913c2805d0 100644
--- a/sys/puf_sram/puf_sram.c
+++ b/sys/puf_sram/puf_sram.c
@@ -16,6 +16,8 @@
  *
  * @}
  */
+#include "cpu_conf.h"
+#include "hashes.h"
 #include "puf_sram.h"
 
 /* Allocation of the PUF seed variable */