diff --git a/zeq/http/server.cpp b/zeq/http/server.cpp
index d121a06..03e57fd 100644
--- a/zeq/http/server.cpp
+++ b/zeq/http/server.cpp
@@ -247,7 +247,7 @@ class Server::Impl : public detail::Sender
 
 namespace
 {
-std::string _getServerParameter( const int argc, const char* argv[] )
+std::string _getServerParameter( const int argc, const char* const* argv )
 {
     for( int i = 0; i < argc; ++i  )
     {
@@ -286,7 +286,7 @@ Server::~Server()
 {}
 
 
-std::unique_ptr< Server > Server::parse( const int argc, const char* argv[] )
+std::unique_ptr< Server > Server::parse( const int argc, const char* const* argv )
 {
     const std::string& param = _getServerParameter( argc, argv );
     if( param.empty( ))
@@ -295,7 +295,7 @@ std::unique_ptr< Server > Server::parse( const int argc, const char* argv[] )
     return std::unique_ptr< Server >( new Server( URI( param )));
 }
 
-std::unique_ptr< Server > Server::parse( const int argc, const char* argv[],
+std::unique_ptr< Server > Server::parse( const int argc, const char* const* argv,
                                          Receiver& shared )
 {
     const std::string& param = _getServerParameter( argc, argv );
diff --git a/zeq/http/server.h b/zeq/http/server.h
index b934449..597ef7c 100644
--- a/zeq/http/server.h
+++ b/zeq/http/server.h
@@ -63,9 +63,9 @@ class Server : public zeq::Receiver
      *   and a randomly chosen port
      */
     ZEQ_API static std::unique_ptr< Server > parse( int argc,
-                                                    const char* argv[] );
+                                                    const char* const* argv );
     ZEQ_API static std::unique_ptr< Server > parse( int argc,
-                                                    const char* argv[],
+                                                    const char* const* argv,
                                                     Receiver& shared );
     /**
      * Get the publisher URI.