diff --git a/src/exec.rs b/src/exec.rs
index 6eeeef8df..f1f2ea738 100644
--- a/src/exec.rs
+++ b/src/exec.rs
@@ -397,12 +397,12 @@ fn safe_launch_process(
     if err.0 == ENOEXEC && is_thompson_shell_script(actual_cmd) {
         // Construct new argv.
         // We must not allocate memory, so only 128 args are supported.
-        const maxargs: usize = 128;
+        const MAXARGS: usize = 128;
         let nargs = argv.len();
         let argv = unsafe { slice::from_raw_parts(argv.get(), nargs) };
-        if nargs <= maxargs {
+        if nargs <= MAXARGS {
             // +1 for /bin/sh, +1 for terminating nullptr
-            let mut argv2 = [std::ptr::null(); 1 + maxargs + 1];
+            let mut argv2 = [std::ptr::null(); 1 + MAXARGS + 1];
             let bshell = PATH_BSHELL.as_ptr() as *const c_char;
             argv2[0] = bshell as *mut c_char;
             argv2[1..argv.len() + 1].copy_from_slice(argv);
diff --git a/src/history.rs b/src/history.rs
index 4319dedc0..08a25a150 100644
--- a/src/history.rs
+++ b/src/history.rs
@@ -1181,13 +1181,13 @@ fn format_history_record(
     let mut timestamp = MaybeUninit::uninit();
     if let Some(show_time_format) = show_time_format.and_then(|s| CString::new(s).ok()) {
         if !unsafe { libc::localtime_r(&seconds, timestamp.as_mut_ptr()).is_null() } {
-            const max_tstamp_length: usize = 100;
-            let mut timestamp_str = [0_u8; max_tstamp_length];
+            const MAX_TIMESTAMP_LENGTH: usize = 100;
+            let mut timestamp_str = [0_u8; MAX_TIMESTAMP_LENGTH];
             use libc::strftime;
             if unsafe {
                 strftime(
                     &mut timestamp_str[0] as *mut u8 as *mut libc::c_char,
-                    max_tstamp_length,
+                    MAX_TIMESTAMP_LENGTH,
                     show_time_format.as_ptr(),
                     timestamp.as_ptr(),
                 )