diff --git a/Ghidra/Processors/MC6800/data/languages/6x09.sinc b/Ghidra/Processors/MC6800/data/languages/6x09.sinc
index 4748408cc3..c11038d562 100644
--- a/Ghidra/Processors/MC6800/data/languages/6x09.sinc
+++ b/Ghidra/Processors/MC6800/data/languages/6x09.sinc
@@ -504,6 +504,7 @@ macro clear(op)
         op = 0;
         $(Z) = 1;
         $(N) = 0;	
+        $(C) = 0;
 }
 
 macro addition(reg, op)