diff --git a/compiler/erg_common/opcode.rs b/compiler/erg_common/opcode.rs
index c0f0c20b..63e71baa 100644
--- a/compiler/erg_common/opcode.rs
+++ b/compiler/erg_common/opcode.rs
@@ -33,6 +33,7 @@ pub enum Opcode {
     BINARY_ADD = 23,
     BINARY_SUBTRACT = 24,
     BINARY_SUBSCR = 25,
+    BINARY_FLOOR_DIVIDE = 26,
     BINARY_TRUE_DIVIDE = 27,
     INPLACE_FLOOR_DIVIDE = 28,
     INPLACE_TRUE_DIVIDE = 29,
@@ -183,6 +184,7 @@ impl From<u8> for Opcode {
             23 => BINARY_ADD,
             24 => BINARY_SUBTRACT,
             25 => BINARY_SUBSCR,
+            26 => BINARY_FLOOR_DIVIDE,
             27 => BINARY_TRUE_DIVIDE,
             28 => INPLACE_FLOOR_DIVIDE,
             29 => INPLACE_TRUE_DIVIDE,
diff --git a/compiler/erg_compiler/codegen.rs b/compiler/erg_compiler/codegen.rs
index 39d68594..fd9baac6 100644
--- a/compiler/erg_compiler/codegen.rs
+++ b/compiler/erg_compiler/codegen.rs
@@ -1163,6 +1163,7 @@ impl CodeGenerator {
             TokenKind::Minus => BINARY_SUBTRACT,
             TokenKind::Star => BINARY_MULTIPLY,
             TokenKind::Slash => BINARY_TRUE_DIVIDE,
+            TokenKind::FloorDiv => BINARY_FLOOR_DIVIDE,
             TokenKind::Pow => BINARY_POWER,
             TokenKind::Mod => BINARY_MODULO,
             TokenKind::AndOp => BINARY_AND,