1 files changed, 5 insertions, 2 deletions
diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index 1e3170862..834399c04 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -136,8 +136,11 @@ void *ndpi_realloc(void *ptr, size_t old_size, size_t new_size) {
   if(!ret)
     return(ret);
   else {
-    memcpy(ret, ptr, old_size);
-    ndpi_free(ptr);
+    if (ptr != NULL)
+    {
+      memcpy(ret, ptr, old_size);
+      ndpi_free(ptr);
+    }
     return(ret);
   }
 }