diff --git a/src/libcoreint/interpreter.c b/src/libcoreint/interpreter.c
index 9592adace..ed91ba3a4 100644
--- a/src/libcoreint/interpreter.c
+++ b/src/libcoreint/interpreter.c
@@ -15,31 +15,6 @@
 
 #include "interpreter.h"
 
-void
-gen_bytecode ()
-{
-  /*
-   while (true) {
-    LEDToggle (LED3);
-    LEDToggle (LED6);
-    LEDToggle (LED7);
-    LEDToggle (LED4);
-    LEDToggle (LED10);
-    LEDToggle (LED8);
-    LEDToggle (LED9);
-    LEDToggle (LED5);
-
-    wait(500);
-   }
-   */
-  //  save_op_data (0, getop_loop_inf (1));
-  //  save_op_data (1, getop_call_1 (0, 12));
-  //  save_op_data (2, getop_call_1 (0, 13));
-  //  save_op_data (3, getop_call_1 (0, 14));
-  //  save_op_data (4, getop_call_1 (0, 15));
-  //  save_op_data (5, getop_jmp (0));
-}
-
 void
 init_int (void)
 {
diff --git a/src/libcoreint/interpreter.h b/src/libcoreint/interpreter.h
index e942d8bc6..7611f05ab 100644
--- a/src/libcoreint/interpreter.h
+++ b/src/libcoreint/interpreter.h
@@ -31,7 +31,6 @@ struct __int_data
   int *root_op_addr; /**< pointer to first opcode saved */
 };
 
-void gen_bytecode (void);
 void init_int (void);
 void run_int (void);
 void run_int_from_pos (struct __int_data *);
diff --git a/src/libcoreint/opcodes.c b/src/libcoreint/opcodes.c
index 56f485722..8d5c68eee 100644
--- a/src/libcoreint/opcodes.c
+++ b/src/libcoreint/opcodes.c
@@ -18,12 +18,6 @@
 #include "jerry-libc.h"
 #include "opcodes.h"
 
-void
-save_op_data (int pos, OPCODE opdata)
-{
-  __program[pos] = opdata;
-}
-
 void opfunc_loop_init_num (OPCODE opdata __unused, struct __int_data *int_data __unused) { JERRY_UNREACHABLE (); }
 void opfunc_loop_precond_begin_num (OPCODE opdata __unused, struct __int_data *int_data __unused) { JERRY_UNREACHABLE (); }
 void opfunc_loop_precond_end_num (OPCODE opdata __unused, struct __int_data *int_data __unused) { JERRY_UNREACHABLE (); }
diff --git a/src/libcoreint/opcodes.h b/src/libcoreint/opcodes.h
index 86766787d..646b3854f 100644
--- a/src/libcoreint/opcodes.h
+++ b/src/libcoreint/opcodes.h
@@ -149,7 +149,5 @@ OPCODE
 }
 __packed;
 
-void save_op_data (int, OPCODE);
-
 #endif	/* OPCODES_H */