diff --git a/dll/steam_gamestats.cpp b/dll/steam_gamestats.cpp
index efe5cd3e..297d0ccc 100644
--- a/dll/steam_gamestats.cpp
+++ b/dll/steam_gamestats.cpp
@@ -521,7 +521,7 @@ void Steam_GameStats::save_session_to_disk(Steam_GameStats::Session_t &session,
             ss << "\"" << name_str << "\",\"" << val_str << "\"\n";
         }
         auto ss_str = ss.str();
-        Local_Storage::store_file_data(folder_u8_str, "session_attributes.csv", ss_str.c_str(), ss_str.size());
+        Local_Storage::store_file_data(folder_u8_str, "session_attributes.csv", ss_str.c_str(), (unsigned int)ss_str.size());
     }
 
     // save each table
@@ -588,7 +588,7 @@ void Steam_GameStats::save_session_to_disk(Steam_GameStats::Session_t &session,
         }
         ss_table << "\n";
         auto ss_str = ss_table.str();
-        Local_Storage::store_file_data(folder_u8_str, table_name.c_str(), ss_str.c_str(), ss_str.size());
+        Local_Storage::store_file_data(folder_u8_str, table_name.c_str(), ss_str.c_str(), (unsigned int)ss_str.size());
 
     }
 }
diff --git a/dll/steam_matchmaking.cpp b/dll/steam_matchmaking.cpp
index c359473b..b3e3a50f 100644
--- a/dll/steam_matchmaking.cpp
+++ b/dll/steam_matchmaking.cpp
@@ -362,7 +362,7 @@ int Steam_Matchmaking::AddFavoriteGame( AppId_t nAppID, uint32 nIP, uint16 nConn
                 directory_path = file_path.substr(0, file_directory);
                 file_name = file_path.substr(file_directory);
             }
-            Local_Storage::store_file_data(directory_path, file_name, (char *)list.data(), list.size());
+            Local_Storage::store_file_data(directory_path, file_name, (char *)list.data(), (unsigned int)list.size());
 
             ++list_lines;
             return static_cast<int>(list_lines);
@@ -379,7 +379,7 @@ int Steam_Matchmaking::AddFavoriteGame( AppId_t nAppID, uint32 nIP, uint16 nConn
             directory_path = file_path.substr(0, file_directory);
             file_name = file_path.substr(file_directory);
         }
-        Local_Storage::store_file_data(directory_path, file_name, (char *)newip_string.data(), newip_string.size());
+        Local_Storage::store_file_data(directory_path, file_name, (char *)newip_string.data(), (unsigned int)newip_string.size());
 
         return 1;
     }
@@ -429,7 +429,7 @@ bool Steam_Matchmaking::RemoveFavoriteGame( AppId_t nAppID, uint32 nIP, uint16 n
                 directory_path = file_path.substr(0, file_directory);
                 file_name = file_path.substr(file_directory);
             }
-            Local_Storage::store_file_data(directory_path, file_name, (char *)list.data(), list.size());
+            Local_Storage::store_file_data(directory_path, file_name, (char *)list.data(), (unsigned int)list.size());
 
             return true;
         }