diff --git a/src/nzg_allocate.c b/src/nzg_allocate.c
index 6603578..7367a20 100644
--- a/src/nzg_allocate.c
+++ b/src/nzg_allocate.c
@@ -183,19 +183,24 @@ void * msgAllocate(msgSpace *space,
 	return NULL;
   }
   printf("Buffer selected : %d,%d\n",selectedPoolIndex,bufferFreeIndex);
-  
   /* mapper le buffer libre dans l'esp addr du proc */
   strcpy(resultPoolId,mSPoolDataTabAddr[selectedPoolIndex].poolId);
 
 
   mSPoolFd=shm_open(resultPoolId,O_RDWR,MSGSPACE_DEFAULT_MODE);
 
-  
-  int bufferFreeSize=mSPoolDataTabAddr[selectedPoolIndex].bufferSize;
-  resultAddr = mmap( 0, 
-	  bufferFreeSize,
+  int bufferFreeSize;
+  bufferFreeSize=mSPoolDataTabAddr[selectedPoolIndex].bufferSize;
+ printf("BufferSize : %d", bufferFreeSize);
+  resultAddr = mmap( NULL, 
+	  bufferFreeSize, 
 	  PROT_READ | PROT_WRITE,
-	  MAP_SHARED, mSPoolFd, bufferFreeSize*bufferFreeIndex );
+	  MAP_SHARED, mSPoolFd,
+	  (off_t)0); // bufferFreeSize*bufferFreeIndex );
+  if( resultAddr == MAP_FAILED) {
+	NZG_ERROR("resultAddr mmap","");
+	goto ERROR;
+  }
 
   //TODO:
   /* - on s'enregistre aupres de ce buffer */  
@@ -209,7 +214,13 @@ void * msgAllocate(msgSpace *space,
   sem_close(poolDataTabSemFd);
 
   /* unmapper le msgPoolDataTab */
-	munmap(mSPoolDataTabAddr,(space->poolNb) * sizeof( msgPoolData ));
-
+  munmap(mSPoolDataTabAddr,(space->poolNb) * sizeof( msgPoolData ));
+  printf( "alloc de 0x%08x\n", (int)resultAddr);
   return resultAddr;
+ERROR:
+  NZG_ERROR("msgAllocate","error processing");
+  sem_post(poolDataTabSemFd);
+  sem_close(poolDataTabSemFd);
+  munmap(mSPoolDataTabAddr,(space->poolNb) * sizeof( msgPoolData ));
+  return NULL;
 }
diff --git a/src/nzg_free.c b/src/nzg_free.c
index ecd9b9a..7ef5e35 100644
--- a/src/nzg_free.c
+++ b/src/nzg_free.c
@@ -1,6 +1,7 @@
 #include "libnazgul.h"
 
 int msgFree(msgSpace * space, void * addr){
+  printf("Freeee de :0x%08x\n",(int)addr);
 
   int poolIndex;
   int bufferIndex;
@@ -20,8 +21,6 @@ sem_t * poolDataTabSemFd;
   }
   sem_wait(poolDataTabSemFd);
 
-
-
   /* verifier le premier arg du shm_open */
 
   poolDataTabFd=shm_open(space->poolDataTabId,
@@ -35,7 +34,7 @@ sem_t * poolDataTabSemFd;
   }
 
 
-  poolDataTabAddr = mmap( 0, (space->poolNb) * sizeof( msgPoolData ),
+  poolDataTabAddr = mmap( NULL, (space->poolNb) * sizeof( msgPoolData ),
 	  PROT_READ | PROT_WRITE,
 	  MAP_SHARED, poolDataTabFd, 0 );
 
@@ -49,6 +48,7 @@ sem_t * poolDataTabSemFd;
   // TODO: verouiller semaphore DataInfo
   int err;
 
+  printf("FREE-SEMWAIT\n");
   err=msgBufferGetProcAttach(
 	  poolDataTabAddr,
 	  space->poolNb,
@@ -81,6 +81,6 @@ sem_t * poolDataTabSemFd;
   //sem_open ressource
   //sem_post
   //sem_close
-  return -1;
+  return 0;
 }
 
diff --git a/test/create_delete.c b/test/create_delete.c
index cc60885..32fca14 100644
--- a/test/create_delete.c
+++ b/test/create_delete.c
@@ -15,7 +15,7 @@ int main(void) {
   poolInfos[1].bufferNb=5;
   poolInfos[1].bufferSize=250;
 
-  poolInfos[2].bufferNb=6;
+  poolInfos[2].bufferNb=5;
   poolInfos[2].bufferSize=280;
   
   strcpy(testId,"test");
@@ -43,7 +43,7 @@ int main(void) {
 	montext=msgAllocate(mSPAC,2,270,0); 
 	sleep(2);
 	montext=msgAllocate(mSPAC,2,270,0);
-	//msgFree(mSPAC,(void *)montext);
+	msgFree(mSPAC,(void *)montext);
 	//msgFree(mSPAC,(void *)montext);
 	//msgFree(mSPAC,(void *)montext);
 	wait(NULL);