diff --git a/projects/mtg/include/WResourceManager.h b/projects/mtg/include/WResourceManager.h
index 4e5cf17f7..a4fff8463 100644
--- a/projects/mtg/include/WResourceManager.h
+++ b/projects/mtg/include/WResourceManager.h
@@ -196,6 +196,7 @@ private:
   vector<WManagedQuad*> managedQuads;
   
   //Statistics of record.
+  string attachedZip;
   unsigned int lastTime;
   int lastError;
 };
diff --git a/projects/mtg/src/WResourceManager.cpp b/projects/mtg/src/WResourceManager.cpp
index 4042cba44..e08357cb0 100644
--- a/projects/mtg/src/WResourceManager.cpp
+++ b/projects/mtg/src/WResourceManager.cpp
@@ -620,7 +620,6 @@ string WResourceManager::cardFile(const string filename, const string specific){
     JFileSystem* fs = JFileSystem::GetInstance();
     char buf[512];
 
-    fs->DetachZipFile();
 
     //Check the specific location, if any.
     if(specific != ""){
@@ -669,7 +668,12 @@ string WResourceManager::cardFile(const string filename, const string specific){
           char zipname[512];
           sprintf(zipname, "Res/sets/%s/%s.zip", set.c_str(),set.c_str());
           if (fileOK(zipname)){
-            fs->AttachZipFile(zipname);
+            if(attachedZip != zipname)
+            {  
+              fs->DetachZipFile();
+              attachedZip = zipname;
+              fs->AttachZipFile(zipname);
+            }
             return filename.substr(i+1);
           }
        }