diff --git a/cbor/src/main/java/com/fasterxml/jackson/dataformat/cbor/CBORParser.java b/cbor/src/main/java/com/fasterxml/jackson/dataformat/cbor/CBORParser.java
index 756b7bea7..d1e32a10d 100644
--- a/cbor/src/main/java/com/fasterxml/jackson/dataformat/cbor/CBORParser.java
+++ b/cbor/src/main/java/com/fasterxml/jackson/dataformat/cbor/CBORParser.java
@@ -2902,9 +2902,9 @@ private final String _findDecodedFromSymbols(final int len) throws IOException
 
         // First quadbyte is easy
         int q1 = (inBuf[inPtr++] & 0xFF);
-        q1 =  (q1 << 8) | (inBuf[inPtr++] & 0xFF);
-        q1 =  (q1 << 8) | (inBuf[inPtr++] & 0xFF);
-        q1 =  (q1 << 8) | (inBuf[inPtr++] & 0xFF);
+        q1 = (q1 << 8) | (inBuf[inPtr++] & 0xFF);
+        q1 = (q1 << 8) | (inBuf[inPtr++] & 0xFF);
+        q1 = (q1 << 8) | (inBuf[inPtr++] & 0xFF);
         
         if (len < 9) {
             int q2 = (inBuf[inPtr++] & 0xFF);
@@ -3006,7 +3006,15 @@ private final String _addDecodedToSymbols(int len, String name) {
     
     private static int[] _growArrayTo(int[] arr, int minSize) {
         return Arrays.copyOf(arr, minSize+4);
-    }    
+    }
+
+    // Helper method needed to fix [dataformats-binary#312], masking of 0x00 character
+    // 26-Feb-2022, tatu: not yet used
+    /*
+    private final static int _padLastQuad(int q, int bytes) {
+        return (bytes == 4) ? q : (q | (-1 << (bytes << 3)));
+    }
+    */
 
     /*
     /**********************************************************
diff --git a/cbor/src/test/java/com/fasterxml/jackson/dataformat/cbor/failing/SymbolTable312Test.java b/cbor/src/test/java/com/fasterxml/jackson/dataformat/cbor/failing/SymbolTable312Test.java
index 607a151b3..13454a385 100644
--- a/cbor/src/test/java/com/fasterxml/jackson/dataformat/cbor/failing/SymbolTable312Test.java
+++ b/cbor/src/test/java/com/fasterxml/jackson/dataformat/cbor/failing/SymbolTable312Test.java
@@ -17,7 +17,7 @@ public void testNullHandling() throws Exception
         final String FIELD3 = FIELD2 + FIELD1;
 
         final String QUOTED_NULL = "\\u0000";
-        
+
         final String SRC = a2q(String.format("{'%s':'a','%s':'b','%s':'c'}",
                 QUOTED_NULL, QUOTED_NULL+QUOTED_NULL, QUOTED_NULL+QUOTED_NULL+QUOTED_NULL));
         byte[] DOC = cborDoc(SRC);