1 files changed, 1 insertions, 1 deletions
diff --git a/opcodes b/opcodes
index e062d1a..1ca81f4 100644
--- a/opcodes
+++ b/opcodes
@@ -120,7 +120,7 @@ break   31..27=0 26..22=0 21..17=0 16..7=1 6..2=0x1D 1..0=3
 
 # vector scalar instructions
 stop    31..27=0 26..22=0 21..17=0 16..7=2 6..2=0x1D 1..0=3
-utidx   31..27=0 26..22=0 21..17=0 16..7=3 6..2=0x1D 1..0=3
+utidx   rd       26..22=0 21..17=0 16..7=3 6..2=0x1D 1..0=3
 
 ei      rd       26..22=0 21..17=0 16..7=0 6..2=0x1E 1..0=3
 di      rd       26..22=0 21..17=0 16..7=1 6..2=0x1E 1..0=3