diff --git a/tests/CSlim/SlimConnectionHandlerTest.cpp b/tests/CSlim/SlimConnectionHandlerTest.cpp
index 2b1341a..299de5f 100644
--- a/tests/CSlim/SlimConnectionHandlerTest.cpp
+++ b/tests/CSlim/SlimConnectionHandlerTest.cpp
@@ -55,13 +55,16 @@ extern "C"
     return result;
   }
 
-  char * slimResponse;
   char sentSlimMessage[32];
   void * sentMsgHandler;
   char * mock_handle_slim_message(void* self, char * message)
   {
     strcpy(sentSlimMessage, message);
     sentMsgHandler = self;
+
+    static char * slimResponse = NULL;
+    slimResponse = (char*)malloc(8 * sizeof(char));
+    strcpy(slimResponse, "ghijklm");
     return slimResponse;
   }
   
@@ -111,9 +114,6 @@ TEST(SlimConnectionHandler, ShouldReadMessageAndCallSlimHandler)
   comLink.recvStream = "000006:abcdef000003:bye";
   comLink.recvPtr = comLink.recvStream;
   
-  slimResponse = (char*)cpputest_malloc(8);
-  strcpy(slimResponse, "ghijklm");
-  
   SlimConnectionHandler_Run(slimConnectionHandler);
   
   STRCMP_EQUAL("Slim -- V0.2\n000007:ghijklm", comLink.lastSendMsg);