diff --git a/src/cpp/multisolver_interface/CMakeLists.txt b/src/cpp/multisolver_interface/CMakeLists.txt
index b12d262a4..724001607 100644
--- a/src/cpp/multisolver_interface/CMakeLists.txt
+++ b/src/cpp/multisolver_interface/CMakeLists.txt
@@ -53,17 +53,19 @@ target_include_directories (solvers
 		${xpansion_interfaces_path}	
 )
 
-
+target_link_libraries(solvers
+		PUBLIC
+		${CMAKE_DL_LIBS}
+)
 
 #CLP-CBC
 if(COIN_OR)
 	target_link_libraries (solvers
-		PUBLIC
+		PRIVATE
 			Coin::Clp
 			Coin::Cgl
 			Coin::CoinUtils
 			Coin::Osi
 			Coin::Cbc
-		   ${CMAKE_DL_LIBS}
 	)
 endif()
diff --git a/src/cpp/multisolver_interface/environment.cc b/src/cpp/multisolver_interface/environment.cc
index b8e65003f..86c157e4c 100644
--- a/src/cpp/multisolver_interface/environment.cc
+++ b/src/cpp/multisolver_interface/environment.cc
@@ -21,6 +21,9 @@
 #include <sstream>
 #include <string>
 
+namespace Solver {
+class DynamicLibrary;
+}
 namespace LoadXpress {
 
 #define STRINGIFY2(X) #X
@@ -141,7 +144,7 @@ std::function<int(XPRSprob prob, int attrib, int* p_value)> XPRSgetintattrib =
 XpressLoader::XpressLoader(std::shared_ptr<ILoggerXpansion> logger)
     : logger_(std::move(logger)) {}
 
-bool XpressLoader::LoadXpressFunctions(DynamicLibrary* xpress_dynamic_library) {
+bool XpressLoader::LoadXpressFunctions(Solver::DynamicLibrary* xpress_dynamic_library) {
   // This was generated with the parse_header_xpress.py script.
   // See the comment at the top of the script.
 
@@ -299,7 +302,7 @@ bool XpressLoader::LoadXpressDynamicLibrary(std::string& xpresspath) {
   static std::string xpress_lib_path;
   static std::once_flag xpress_loading_done;
   static bool ret;
-  static DynamicLibrary xpress_library;
+  static Solver::DynamicLibrary xpress_library;
   // static std::mutex mutex;
 
   // mutex.lock();
diff --git a/src/cpp/multisolver_interface/include/multisolver_interface/dynamic_library.h b/src/cpp/multisolver_interface/include/multisolver_interface/dynamic_library.h
index fd5909995..a333a86c5 100644
--- a/src/cpp/multisolver_interface/include/multisolver_interface/dynamic_library.h
+++ b/src/cpp/multisolver_interface/include/multisolver_interface/dynamic_library.h
@@ -26,6 +26,7 @@
 #include <dlfcn.h>
 #endif
 
+namespace Solver {
 class DynamicLibrary {
   static constexpr size_t kMaxFunctionsNotFound = 10;
 
@@ -111,5 +112,6 @@ class DynamicLibrary {
     }
   };
 };
+}
 
 #endif  // OR_TOOLS_BASE_DYNAMIC_LIBRARY_H_
diff --git a/src/cpp/multisolver_interface/include/multisolver_interface/environment.h b/src/cpp/multisolver_interface/include/multisolver_interface/environment.h
index 022e8cfc5..fc9041d01 100644
--- a/src/cpp/multisolver_interface/include/multisolver_interface/environment.h
+++ b/src/cpp/multisolver_interface/include/multisolver_interface/environment.h
@@ -59,7 +59,7 @@ class XpressLoader {
   std::vector<std::string> XpressDynamicLibraryPotentialPaths(); 
   std::string GetXpressVarFromEnvironmentVariables(const char* XPRESS_var,
                                                   bool verbose = true);
-  bool LoadXpressFunctions(DynamicLibrary* xpress_dynamic_library);
+  bool LoadXpressFunctions(Solver::DynamicLibrary* xpress_dynamic_library);
   int loadLicence(const std::string& lib_path, bool verbose);
 };