diff --git a/src/Interpreter/interpreter.cpp b/src/Interpreter/interpreter.cpp
index 834c4f4f..d3059882 100644
--- a/src/Interpreter/interpreter.cpp
+++ b/src/Interpreter/interpreter.cpp
@@ -432,7 +432,7 @@ bool Interpreter::interpret(Module *m, bool waiting) {
                 continue;
 
                 // conversion operations
-            case 0xa7 ... 0xbb:
+            case 0xa7 ... 0xbf:
                 success &= i_instr_conversion(m, opcode);
                 continue;