diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 514466ed63..d72dcec042 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,7 @@
+2020-01-04  Alan Modra  <amodra@gmail.com>
+
+	* cr16-dis.c (cr16_match_opcode): Avoid shift left of signed value.
+
 2020-01-04  Alan Modra  <amodra@gmail.com>
 
 	* crx-dis.c (match_opcode): Avoid shift left of signed value.
diff --git a/opcodes/cr16-dis.c b/opcodes/cr16-dis.c
index c40a07e250..1be67b2118 100644
--- a/opcodes/cr16-dis.c
+++ b/opcodes/cr16-dis.c
@@ -319,8 +319,7 @@ cr16_match_opcode (void)
 {
   unsigned long mask;
   /* The instruction 'constant' opcode doesn't exceed 32 bits.  */
-  unsigned long doubleWord = (cr16_words[1]
-			     + (cr16_words[0] << 16)) & 0xffffffff;
+  unsigned long doubleWord = cr16_words[1] + ((unsigned) cr16_words[0] << 16);
 
   /* Start searching from end of instruction table.  */
   instruction = &cr16_instruction[NUMOPCODES - 2];