diff --git a/library/cipher_wrap.c b/library/cipher_wrap.c
index c5aa99b..5da590e 100644
--- a/library/cipher_wrap.c
+++ b/library/cipher_wrap.c
@@ -32,9 +32,18 @@
 #if defined(POLARSSL_CIPHER_C)
 
 #include "polarssl/cipher_wrap.h"
+
+#if defined(POLARSSL_AES_C)
 #include "polarssl/aes.h"
+#endif
+
+#if defined(POLARSSL_CAMELLIA_C)
 #include "polarssl/camellia.h"
+#endif
+
+#if defined(POLARSSL_DES_C)
 #include "polarssl/des.h"
+#endif;
 
 #include <stdlib.h>
 
diff --git a/library/md_wrap.c b/library/md_wrap.c
index 64d8bb6..f276db5 100644
--- a/library/md_wrap.c
+++ b/library/md_wrap.c
@@ -32,12 +32,30 @@
 #if defined(POLARSSL_MD_C)
 
 #include "polarssl/md_wrap.h"
+
+#if defined(POLARSSL_MD2_C)
 #include "polarssl/md2.h"
+#endif
+
+#if defined(POLARSSL_MD4_C)
 #include "polarssl/md4.h"
+#endif
+
+#if defined(POLARSSL_MD5_C)
 #include "polarssl/md5.h"
+#endif
+
+#if defined(POLARSSL_SHA1_C)
 #include "polarssl/sha1.h"
+#endif
+
+#if defined(POLARSSL_SHA2_C)
 #include "polarssl/sha2.h"
+#endif
+
+#if defined(POLARSSL_SHA4_C)
 #include "polarssl/sha4.h"
+#endif
 
 #include <stdlib.h>