diff --git a/melib/src/utils/datetime.rs b/melib/src/utils/datetime.rs
index 3325f0ff..c79bdb3e 100644
--- a/melib/src/utils/datetime.rs
+++ b/melib/src/utils/datetime.rs
@@ -90,25 +90,23 @@ extern "C" {
     fn gettimeofday(tv: *mut libc::timeval, tz: *mut libc::timezone) -> i32;
 }
 
-#[cfg(not(target_os = "openbsd"))]
+#[cfg(target_os = "openbsd")]
+const _LC_LAST: c_int = 7;
+#[cfg(all(target_os = "openbsd", target_env = "musl"))]
+const PLATFORM_ALL_MASK: i32 = 0x7fffffff;
+#[cfg(all(target_os = "openbsd", not(target_env = "musl")))]
+const PLATFORM_ALL_MASK: i32 = (1 << _LC_LAST) - 2;
+#[cfg(all(not(target_os = "openbsd"), target_env = "musl"))]
+const PLATFORM_ALL_MASK: i32 = 0x7fffffff;
+#[cfg(all(not(target_os = "openbsd"), not(target_env = "musl")))]
+const PLATFORM_ALL_MASK: i32 = libc::LC_ALL_MASK;
+
 #[repr(i32)]
 #[derive(Clone, Copy)]
 #[allow(dead_code)]
 enum LocaleCategoryMask {
     Time = libc::LC_TIME_MASK,
-    All = libc::LC_ALL_MASK,
-}
-
-#[cfg(target_os = "openbsd")]
-const _LC_LAST: c_int = 7;
-
-#[cfg(target_os = "openbsd")]
-#[repr(i32)]
-#[derive(Clone, Copy)]
-#[allow(dead_code)]
-enum LocaleCategoryMask {
-    Time = 1 << libc::LC_TIME,
-    All = (1 << _LC_LAST) - 2,
+    All = PLATFORM_ALL_MASK,
 }
 
 #[repr(i32)]