diff --git a/communication_techniques/include/asm_cache_comm.h b/communication_techniques/include/asm_cache_comm.h
index 8abfbdd..16b8871 100644
--- a/communication_techniques/include/asm_cache_comm.h
+++ b/communication_techniques/include/asm_cache_comm.h
@@ -31,7 +31,7 @@ extern struct communication_assoc assoc_root;
 __BEGIN_DECLS
 
 struct communication_assoc *create_comm_assoc(void);
-static inline void send(void *addr) {
+static inline void send(void **addr) {
  	asm volatile("mov    %%gs:channel@NTPOFF + 2 *" toString(BUF_SIZE) " + " toString(CACHE_LINE_SIZE) ", %%eax\n\t"
 							 "mov    %0, %%gs:channel@NTPOFF(%%eax)\n\t"
 							 "addl   $4, %%eax\n\t"
diff --git a/communication_techniques/include/pipe_comm.h b/communication_techniques/include/pipe_comm.h
index c068ef1..fd2d49e 100644
--- a/communication_techniques/include/pipe_comm.h
+++ b/communication_techniques/include/pipe_comm.h
@@ -26,7 +26,7 @@ extern __thread int pipefd[];
 extern struct communication_assoc assoc_root;
 
 struct communication_assoc *create_comm_assoc(void);
-static inline void send(void *addr) {
+static inline void send(void **addr) {
 	write(pipefd[WRITE_IDX], &addr, sizeof(void *));
 }
 
diff --git a/communication_techniques/include/shared_mem_comm.h b/communication_techniques/include/shared_mem_comm.h
index 81a4cea..8bc88b9 100644
--- a/communication_techniques/include/shared_mem_comm.h
+++ b/communication_techniques/include/shared_mem_comm.h
@@ -28,7 +28,7 @@ extern __thread volatile int prod_idx;
 extern __thread volatile int cons_idx;
 
 struct communication_assoc *create_comm_assoc(void);
-static inline void send(void *addr) {
+static inline void send(void **addr) {
 	while ((prod_idx + 1) % SHARED_SPACE_VOIDPTR == cons_idx);
 	shared_space[prod_idx] = addr;
 	prod_idx = (prod_idx + 1) % SHARED_SPACE_VOIDPTR;
diff --git a/communication_techniques/include/shared_mem_opt_comm.h b/communication_techniques/include/shared_mem_opt_comm.h
index 0211040..5cabe9c 100644
--- a/communication_techniques/include/shared_mem_opt_comm.h
+++ b/communication_techniques/include/shared_mem_opt_comm.h
@@ -28,7 +28,7 @@ extern __thread volatile int prod_idx;
 extern __thread volatile int cons_idx;
 
 struct communication_assoc *create_comm_assoc(void);
-static inline void send(void *addr) {
+static inline void send(void **addr) {
 	static __thread int local_cons_idx = 0;
 
 	if (likely(((prod_idx + 1) % SHARED_SPACE_VOIDPTR) == local_cons_idx))
diff --git a/communication_techniques/src/main.c b/communication_techniques/src/main.c
index cda2943..fa34f72 100644
--- a/communication_techniques/src/main.c
+++ b/communication_techniques/src/main.c
@@ -148,7 +148,7 @@ int analyse_options(int argc, char *argv[])
 void *producer(void *cont_ptr_void)
 {
 	int i, j;
-	uintptr_t k;
+	void *k;
 	volatile int *cont;
 
 	cont = *((volatile int **) cont_ptr_void);
@@ -168,7 +168,7 @@ void *producer(void *cont_ptr_void)
 	}
 	printf("Registering: %p !\n", (void*) pthread_self());
 	add_sender();
-	k = (uintptr_t) pthread_self();
+	k = cont_ptr_void;
 	if (initialize_papi() != -1)
 	{
 		for(i = 0; i < nb_cache_lines; i++) {