diff --git a/crypto/aes/aes_cfb.c b/crypto/aes/aes_cfb.c
index 2e0c41ec2..ab42cd5ec 100644
--- a/crypto/aes/aes_cfb.c
+++ b/crypto/aes/aes_cfb.c
@@ -114,6 +114,7 @@
 
 #include <openssl/aes.h>
 #include "aes_locl.h"
+#include "e_os.h"
 
 /* The input and output encrypted as though 128bit cfb mode is being
  * used.  The extra state information to record how much of the
diff --git a/crypto/des/cfb64ede.c b/crypto/des/cfb64ede.c
index f422fef1d..f3c601852 100644
--- a/crypto/des/cfb64ede.c
+++ b/crypto/des/cfb64ede.c
@@ -57,6 +57,7 @@
  */
 
 #include "des_locl.h"
+#include "e_os.h"
 
 /* The input and output encrypted as though 64bit cfb mode is being
  * used.  The extra state information to record how much of the