diff --git a/src/m68k.rs b/src/m68k.rs
index 1617eb2..da2245a 100644
--- a/src/m68k.rs
+++ b/src/m68k.rs
@@ -626,7 +626,7 @@ impl M68K {
             Instruction::Rte => {
                 self.sr = self.pop(Size::Word)? as u16;
                 self.pc = self.pop(Size::Long)?;
-                let format = (self.pop(Size::Long)? & 0xf000) >> 12;
+                let format = (self.pop(Size::Word)? & 0xf000) >> 12;
                 if format == 8 {
                     let special_status_word = self.pop(Size::Long)?;
                     let fault_address = self.pop(Size::Long)?;