diff --git a/commands.md b/commands.md
index 1ba2243..50abf24 100644
--- a/commands.md
+++ b/commands.md
@@ -231,7 +231,7 @@ $ solana-test-suite run-tests [OPTIONS]
 * `-v, --verbose`: Verbose output: log failed test cases
 * `-c, --consensus-mode`: Only fail on consensus failures. One such effect is to normalize error codes when comparing results
 * `-f, --failures-only`: Only log failed test cases
-* `-sf, --save-failures`: Saves failed test cases to results directory  [default: True]
+* `-sf, --save-failures`: Saves failed test cases to results directory
 * `-ss, --save-successes`: Saves successful test cases to results directory
 * `-l, --log-level INTEGER`: FD logging level  [default: 5]
 * `--help`: Show this message and exit.
diff --git a/src/test_suite/fuzz_context.py b/src/test_suite/fuzz_context.py
index f52fb99..cf2898f 100644
--- a/src/test_suite/fuzz_context.py
+++ b/src/test_suite/fuzz_context.py
@@ -31,6 +31,7 @@
 SyscallHarness = HarnessCtx(
     fuzz_fn_name="sol_compat_vm_syscall_execute_v1",
     fixture_desc=vm_pb.SyscallFixture.DESCRIPTOR,
+    context_human_encode_fn=syscall_codec.encode_input,
     effects_human_encode_fn=syscall_codec.encode_output,
 )
 
diff --git a/src/test_suite/syscall/codec_utils.py b/src/test_suite/syscall/codec_utils.py
index 8fd17e1..05e091d 100644
--- a/src/test_suite/syscall/codec_utils.py
+++ b/src/test_suite/syscall/codec_utils.py
@@ -1,6 +1,15 @@
 import base64
+import test_suite.invoke_pb2 as invoke_pb
 import test_suite.vm_pb2 as vm_pb
 from test_suite.fuzz_interface import encode_hex_compact
+from test_suite.instr.codec_utils import encode_input as instr_encode_input
+
+
+def encode_input(input: vm_pb.SyscallContext):
+    instr_ctx = invoke_pb.InstrContext()
+    instr_ctx.CopyFrom(input.instr_ctx)
+    instr_encode_input(instr_ctx)
+    input.instr_ctx.CopyFrom(instr_ctx)
 
 
 def encode_output(effects: vm_pb.SyscallEffects):
diff --git a/src/test_suite/test_suite.py b/src/test_suite/test_suite.py
index d304e23..b8e8c98 100644
--- a/src/test_suite/test_suite.py
+++ b/src/test_suite/test_suite.py
@@ -361,7 +361,7 @@ def run_tests(
         help="Only log failed test cases",
     ),
     save_failures: bool = typer.Option(
-        True,
+        False,
         "--save-failures",
         "-sf",
         help="Saves failed test cases to results directory",