diff --git a/src/platform/redox/exec.rs b/src/platform/redox/exec.rs
index 3590413c..1b4b96bb 100644
--- a/src/platform/redox/exec.rs
+++ b/src/platform/redox/exec.rs
@@ -127,18 +127,22 @@ pub fn execve(
     // TODO: At some point we might have capabilities limiting the ability to allocate
     // executable memory.
 
-    let Resugid { ruid, rgid, .. } = redox_rt::sys::posix_getresugid();
-
-    let mode = if ruid == stat.st_uid {
-        (stat.st_mode >> 3 * 2) & 0o7
-    } else if rgid == stat.st_gid {
-        (stat.st_mode >> 3 * 1) & 0o7
-    } else {
-        stat.st_mode & 0o7
-    };
+    let Resugid { ruid, euid, rgid, .. } = redox_rt::sys::posix_getresugid();
+
+    // Root (uid 0) bypasses execute permission checks, matching Linux behavior.
+    // Check both ruid and euid since Linux checks the effective UID.
+    if ruid != 0 && euid != 0 {
+        let mode = if ruid == stat.st_uid {
+            (stat.st_mode >> 3 * 2) & 0o7
+        } else if rgid == stat.st_gid {
+            (stat.st_mode >> 3 * 1) & 0o7
+        } else {
+            stat.st_mode & 0o7
+        };
 
-    if mode & 0o1 == 0o0 {
-        return Err(Error::new(EPERM));
+        if mode & 0o1 == 0o0 {
+            return Err(Error::new(EACCES));
+        }
     }
 
     let cwd: Box<[u8]> = super::path::clone_cwd().unwrap_or_default().into();