diff --git a/modules/encryption/enc_bcrypt.cpp b/modules/encryption/enc_bcrypt.cpp
index 8ead26858..6b98b7f8b 100644
--- a/modules/encryption/enc_bcrypt.cpp
+++ b/modules/encryption/enc_bcrypt.cpp
@@ -19,7 +19,10 @@
 #include <climits>
 #include <random>
 
+extern "C"
+{
 #include "bcrypt/crypt_blowfish.h"
+}
 
 #include "module.h"
 #include "modules/encryption.h"
diff --git a/modules/encryption/enc_md5.cpp b/modules/encryption/enc_md5.cpp
index 4e0784733..2f4e473f3 100644
--- a/modules/encryption/enc_md5.cpp
+++ b/modules/encryption/enc_md5.cpp
@@ -19,7 +19,10 @@
 #include "module.h"
 #include "modules/encryption.h"
 
+extern "C"
+{
 #include "md5/md5.h"
+}
 
 class MD5Context final
 	: public Encryption::Context