diff --git a/common/assembler.fs b/common/assembler.fs
index 89252a7..758ee37 100644
--- a/common/assembler.fs
+++ b/common/assembler.fs
@@ -110,7 +110,7 @@ variable istep
 : disasm1 ( a -- a )
   dup . ."  --  " 0 istep ! ['] matchit for-ops
   istep @ 0= if 1 istep ! ." UNKNOWN!!!" then
-  9 emit 9 emit ." -- " dup istep @ m.
+  9 emit 9 emit ." -- " dup m@ istep @ m.
   istep @ +
   cr
 ;
diff --git a/esp32/xtensa-assembler.fs b/esp32/xtensa-assembler.fs
index 4264913..6b7e5b4 100644
--- a/esp32/xtensa-assembler.fs
+++ b/esp32/xtensa-assembler.fs
@@ -27,7 +27,7 @@ vocabulary xtensa xtensa definitions
 
 numeric operand im
 : imm4   im im im im ;
-: imm8   imm4 ;
+: imm8   imm4 imm4 ;
 : imm12   imm4 imm4 imm4 ;
 : imm16   imm8 imm8 ;
 : offset   imm8 imm8 im im ;