diff --git a/crypto/blake2_common.h b/crypto/blake2_common.h
index 39cefd72c19..6b8f5145e2b 100644
--- a/crypto/blake2_common.h
+++ b/crypto/blake2_common.h
@@ -1,4 +1,5 @@
 
+#include <stdint.h>
 #include "byte_order.h"
 
 static inline uint32_t load32(const void *src) {
diff --git a/crypto/groestl.h b/crypto/groestl.h
index 06de5724e8f..c8f35de859f 100644
--- a/crypto/groestl.h
+++ b/crypto/groestl.h
@@ -37,6 +37,7 @@
 #define GROESTL_H__
 
 #include <stddef.h>
+#include <stdint.h>
 
 /**
  * This structure is a context for Groestl-512 computation: