diff --git a/cocodump/targets/cdm8e/decoder.py b/cocodump/targets/cdm8e/decoder.py
index df3f87fb..d7664d33 100644
--- a/cocodump/targets/cdm8e/decoder.py
+++ b/cocodump/targets/cdm8e/decoder.py
@@ -10,9 +10,13 @@ def normalize_imm8(val: int):
         return val
 
 
-def decode(image: bytearray, has_ivt: bool = False) -> DecodedSection:
+def append_new_instructions():
     inst_decoders[InstructionGroup.LDI_GR].mnemonics[13] = "jmp"
 
+
+def decode(image: bytearray, has_ivt: bool = False) -> DecodedSection:
+    append_new_instructions()
+
     section = DecodedSection()
 
     section_iter = iter(image)