diff --git a/crates/muvm/src/guest/fex.rs b/crates/muvm/src/guest/fex.rs
index 4dc725a..5da878b 100644
--- a/crates/muvm/src/guest/fex.rs
+++ b/crates/muvm/src/guest/fex.rs
@@ -8,21 +8,20 @@ use crate::utils::env::find_in_path;
 const FEX_X86_BINFMT_MISC_RULE: &str = ":FEX-x86:M:0:\\x7fELF\\x01\\x01\\x01\\x00\\x00\\x00\\x00\\\
                                         x00\\x00\\x00\\x00\\x00\\x02\\x00\\x03\\x00:\\xff\\xff\\\
                                         xff\\xff\\xff\\xfe\\xfe\\x00\\x00\\x00\\x00\\xff\\xff\\\
-                                        xff\\xff\\xff\\xfe\\xff\\xff\\xff:${FEX_INTERPRETER}:POCF";
+                                        xff\\xff\\xff\\xfe\\xff\\xff\\xff:${FEX}:POCF";
 const FEX_X86_64_BINFMT_MISC_RULE: &str =
     ":FEX-x86_64:M:0:\\x7fELF\\x02\\x01\\x01\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x02\\\
      x00\\x3e\\x00:\\xff\\xff\\xff\\xff\\xff\\xfe\\xfe\\x00\\x00\\x00\\x00\\xff\\xff\\xff\\xff\\\
-     xff\\xfe\\xff\\xff\\xff:${FEX_INTERPRETER}:POCF";
+     xff\\xfe\\xff\\xff\\xff:${FEX}:POCF";
 
 pub fn setup_fex() -> Result<()> {
-    let fex_interpreter_path =
-        find_in_path("FEXInterpreter").context("Failed to check existence of `FEXInterpreter`")?;
-    let Some(fex_interpreter_path) = fex_interpreter_path else {
-        return Err(anyhow!("Failed to find `FEXInterpreter` in PATH"));
+    let fex_path = find_in_path("FEX").context("Failed to check existence of `FEX`")?;
+    let Some(fex_path) = fex_path else {
+        return Err(anyhow!("Failed to find `FEX` in PATH"));
     };
-    let fex_interpreter_path = fex_interpreter_path
+    let fex_path = fex_path
         .to_str()
-        .context("Failed to process `FEXInterpreter` path as it contains invalid UTF-8")?;
+        .context("Failed to process `FEX` path as it contains invalid UTF-8")?;
 
     let mut file = File::options()
         .write(true)
@@ -30,12 +29,12 @@ pub fn setup_fex() -> Result<()> {
         .context("Failed to open binfmt_misc/register for writing")?;
 
     {
-        let rule = FEX_X86_BINFMT_MISC_RULE.replace("${FEX_INTERPRETER}", fex_interpreter_path);
+        let rule = FEX_X86_BINFMT_MISC_RULE.replace("${FEX}", fex_path);
         file.write_all(rule.as_bytes())
             .context("Failed to register `FEX-x86` binfmt_misc rule")?;
     }
     {
-        let rule = FEX_X86_64_BINFMT_MISC_RULE.replace("${FEX_INTERPRETER}", fex_interpreter_path);
+        let rule = FEX_X86_64_BINFMT_MISC_RULE.replace("${FEX}", fex_path);
         file.write_all(rule.as_bytes())
             .context("Failed to register `FEX-x86_64` binfmt_misc rule")?;
     }