diff --git a/net/packet/types.go b/net/packet/types.go
index c95dda4..cf2a1c7 100644
--- a/net/packet/types.go
+++ b/net/packet/types.go
@@ -277,10 +277,10 @@ func (v *VarInt) Decode(r DecodeReader) error {
 
 		n |= uint32(sec&0x7F) << uint32(7*i)
 
-		if sec&0x80 == 0 {
-			break
-		} else if i > 5 {
+		if i >= 5 {
 			return errors.New("VarInt is too big")
+		} else if sec&0x80 == 0 {
+			break
 		}
 	}
 
@@ -316,10 +316,10 @@ func (v *VarLong) Decode(r DecodeReader) error {
 
 		n |= uint64(sec&0x7F) << uint64(7*i)
 
-		if sec&0x80 == 0 {
+		if i >= 10 {
+			return errors.New("VarLong is too big")
+		} else if sec&0x80 == 0 {
 			break
-		} else if i > 10 {
-			return errors.New("VarInt is too big")
 		}
 	}