diff --git a/androscalpel_serializer/src/file_reader.rs b/androscalpel_serializer/src/file_reader.rs
index 8b8d1ca..6f77979 100644
--- a/androscalpel_serializer/src/file_reader.rs
+++ b/androscalpel_serializer/src/file_reader.rs
@@ -237,9 +237,11 @@ impl<'a> DexFileReader<'a> {
     }
 
     fn sanity_check(&self) -> Result<()> {
-        if self.header.magic.version != [0x30, 0x33, 0x39] {
+        let version = self.header.magic.version;
+        let version = (version[0] - 0x30) * 100 + (version[1] - 0x30) * 10 + (version[2] - 0x30);
+        if version > 39 {
             warn!(
-                "DEX 039 is the only version currently supported, found {}",
+                "Only version <= DEX 039 are currently supported, found {}",
                 std::str::from_utf8(self.header.magic.version.as_slice())
                     .unwrap_or(&format!("{:x?}", self.header.magic.version))
             );