diff --git a/protobuf/src/main/java/com/fasterxml/jackson/dataformat/protobuf/ProtobufParser.java b/protobuf/src/main/java/com/fasterxml/jackson/dataformat/protobuf/ProtobufParser.java
index d549fbfae..c65d42980 100644
--- a/protobuf/src/main/java/com/fasterxml/jackson/dataformat/protobuf/ProtobufParser.java
+++ b/protobuf/src/main/java/com/fasterxml/jackson/dataformat/protobuf/ProtobufParser.java
@@ -954,7 +954,7 @@ private void _skipUnknownValue(int wireType) throws IOException
             _skipBytes(4);
             break;
         case WireType.FIXED_64BIT:
-            _skipBytes(64);
+            _skipBytes(8);
             break;
         case WireType.LENGTH_PREFIXED:
             int len = _decodeLength();