diff -r 24a012440dee -r 279dd3ca7a77 test/buffer_tests.c
--- a/test/buffer_tests.c	Tue May 06 12:03:16 2014 +0200
+++ b/test/buffer_tests.c	Tue May 06 12:30:12 2014 +0200
@@ -363,6 +363,8 @@
 
 UCX_TEST(test_ucx_buffer_write) {
     char *buffer = (char*) malloc(32);
+    memset(buffer, 0, 32);
+    
     memset(buffer, 32, 8);
     for (int i = 8; i < 16 ; i++) {
         buffer[i] = 40+i;
@@ -432,6 +434,7 @@
 
 UCX_TEST(test_ucx_buffer_write_ax) {
     char *buffer = (char*) malloc(16);
+    memset(buffer, 0, 16);
 
     UcxBuffer *b = ucx_buffer_new(buffer, 16,
             UCX_BUFFER_AUTOEXTEND | UCX_BUFFER_AUTOFREE);