diff --git a/userspace/strace/src/format.rs b/userspace/strace/src/format.rs
index 2fd43e64..13230ace 100644
--- a/userspace/strace/src/format.rs
+++ b/userspace/strace/src/format.rs
@@ -189,7 +189,7 @@ fn format_byte_slice(bytes: &[u8], real_len: usize, allow_ascii: bool) -> String
     if bytes.is_empty() {
         return "<empty>".into();
     }
-    if bytes[0].is_ascii_graphic() && allow_ascii {
+    if allow_ascii {
         // Format as ASCII string
         write!(result, "\"").ok();
         for &byte in bytes {
@@ -372,11 +372,6 @@ impl Result {
 }
 
 pub fn format_syscall(tracer: &mut CommandTracer, syscall: &SyscallTrace) {
-    // Ignore mutex calls for now, they're too noisy
-    if syscall.function == SyscallFunction::Mutex as usize {
-        return;
-    }
-
     if let Some(Some(formatter)) = FORMATTERS.get(syscall.function) {
         formatter.print(tracer, &syscall.args, syscall.result);
     }