diff --git a/nlsr_sync.c b/nlsr_sync.c
index 5f11464..c588203 100644
--- a/nlsr_sync.c
+++ b/nlsr_sync.c
@@ -266,7 +266,7 @@
 					ccn_content_get_value(ptr_in, length_in, &pcobuf1, 
 															&ptr_in, &length_in);
 					content_data = (unsigned char *) calloc(length_in, 
-																sizeof(unsigned char ));
+																sizeof(char ));
 					memcpy (content_data, ptr_in, length_in);
 					ret=0;
 				}