diff --git a/src/mem.c b/src/mem.c
index 1f5f76d..d4305e3 100644
--- a/src/mem.c
+++ b/src/mem.c
@@ -123,10 +123,10 @@ kore_realloc(void *ptr, size_t len)
 		nptr = mem_alloc(len);
 	} else {
 		mem = meminfo(ptr);
-		if (len <= mem->len)
+		if (len == mem->len)
 			return (ptr);
 		nptr = mem_alloc(len);
-		memcpy(nptr, ptr, mem->len);
+		memcpy(nptr, ptr, MIN(len, mem->len));
 		kore_free_zero(ptr);
 	}