diff --git a/src/isinetaddr.c b/src/isinetaddr.c
index 8e3358e..a2582ea 100644
--- a/src/isinetaddr.c
+++ b/src/isinetaddr.c
@@ -17,7 +17,7 @@ isinetaddr(const char *str)
 
   for (size_t l = 0; l < len; l++) {
     if (str[l] == '.') {
-      if (octets == 2 && digits == 0) {
+      if (buflen == 0) {
         return 0;
       } else if (!in_range(buf, buflen)) {
         return 0;
diff --git a/test/isinetaddr_test.c b/test/isinetaddr_test.c
index c5e43e2..d5b752c 100644
--- a/test/isinetaddr_test.c
+++ b/test/isinetaddr_test.c
@@ -25,6 +25,7 @@ const char *invalid[] = {
   ".......",
   "192.2.2.",
   "...4",
+  "4...4",
   NULL
 };