1 files changed, 1 insertions, 0 deletions
diff --git a/libnetdata/libnetdata.c b/libnetdata/libnetdata.c
index 095c38c25e..70b656d838 100644
--- a/libnetdata/libnetdata.c
+++ b/libnetdata/libnetdata.c
@@ -168,6 +168,7 @@ char *strdupz(const char *s) {
     return t;
 }
 
+// If ptr is NULL, no operation is performed.
 void freez(void *ptr) {
     free(ptr);
 }