diff --git a/src/slic3r/Utils/Http.cpp b/src/slic3r/Utils/Http.cpp
index 3a77fc1c07..1db14c6686 100644
--- a/src/slic3r/Utils/Http.cpp
+++ b/src/slic3r/Utils/Http.cpp
@@ -61,7 +61,6 @@ struct CurlGlobalInit
             "/etc/ssl/ca-bundle.pem"              // OpenSUSE Tumbleweed
         };
 
-        namespace fs = boost::filesystem;
         // Env var name for the OpenSSL CA bundle (SSL_CERT_FILE nomally)
         const char *const SSL_CA_FILE = X509_get_default_cert_file_env();
         const char * ssl_cafile = ::getenv(SSL_CA_FILE);