diff --git a/src/libstrongswan/plugins/sha1/sha1_hasher.c b/src/libstrongswan/plugins/sha1/sha1_hasher.c
index b0efbae7d..b51a26152 100644
--- a/src/libstrongswan/plugins/sha1/sha1_hasher.c
+++ b/src/libstrongswan/plugins/sha1/sha1_hasher.c
@@ -18,7 +18,8 @@
  */
 
 #include <string.h>
-#include <arpa/inet.h>
+
+#include <library.h>
 
 #include "sha1_hasher.h"
 
@@ -257,4 +258,3 @@ sha1_hasher_t *sha1_hasher_create(hash_algorithm_t algo)
 
 	return &(this->public);
 }
-
diff --git a/src/libstrongswan/plugins/sha1/sha1_prf.c b/src/libstrongswan/plugins/sha1/sha1_prf.c
index cdc494b34..cc4924a80 100644
--- a/src/libstrongswan/plugins/sha1/sha1_prf.c
+++ b/src/libstrongswan/plugins/sha1/sha1_prf.c
@@ -16,7 +16,7 @@
 #include "sha1_prf.h"
 #include "sha1_hasher.h"
 
-#include <arpa/inet.h>
+#include <library.h>
 
 typedef struct private_sha1_prf_t private_sha1_prf_t;
 typedef struct private_sha1_hasher_t private_sha1_hasher_t;
@@ -148,4 +148,3 @@ sha1_prf_t *sha1_prf_create(pseudo_random_function_t algo)
 
 	return &this->public;
 }
-