diff --git a/SLS_Python/sls_py/file.py b/SLS_Python/sls_py/file.py
index 3d0c7f7..0290dd1 100644
--- a/SLS_Python/sls_py/file.py
+++ b/SLS_Python/sls_py/file.py
@@ -1,6 +1,6 @@
 from pathlib import Path
-from sls.lexer import LexerInfo, lexical_analysis, Token
-from sls.interpreter import InterpreterState
+from .lexer import LexerInfo, lexical_analysis, Token
+from .interpreter import InterpreterState
 
 
 def exec_file(interpreter_state: InterpreterState, filename: str) -> bool:
diff --git a/SLS_Python/sls_py/repl.py b/SLS_Python/sls_py/repl.py
index e8b3fa6..e16c7e8 100644
--- a/SLS_Python/sls_py/repl.py
+++ b/SLS_Python/sls_py/repl.py
@@ -1,6 +1,6 @@
 from .meta import print_version
 from .lexer import LexerInfo, lexical_analysis
-from .interpreter import InterpreterState
+from .interpreter import InterpreterState, StackType
 
 
 REPL_FILE_NAME = "<STDIN>"
@@ -16,23 +16,25 @@ def print_top_of_stack(interpreter: InterpreterState) -> None:
 
     t = item.type
 
-    if t == "Identifier":
+    if t == StackType.IDENTIFIER:
         print(f"#0: ::{item.value}")
-    elif t in {"i64", "i32", "i16", "i8"}:
+    elif t == StackType.I64:
+        print(f"#0: {item.value}")
+    elif t in {StackType.I32, StackType.I16, StackType.I8}:
         print(f"#0: {item.value}:{t}")
-    elif t in {"u64", "u32", "u16", "u8"}:
+    elif t in {StackType.U64, StackType.U32, StackType.U16, StackType.U8}:
         print(f"#0: {item.value}:{t}")
-    elif t == "f32":
+    elif t == StackType.F32:
         print(f"#0: {item.value}:f32")
-    elif t == "f64":
+    elif t == StackType.F64:
         print(f"#0: {item.value}")
-    elif t == "char":
+    elif t == StackType.CHARACTER:
         print(f"#0: {item.value}")
-    elif t == "bool":
+    elif t == StackType.BOOLEAN:
         print("#0: TRUE" if item.value else "#0: FALSE")
-    elif t == "TokenString":
+    elif t == StackType.TOKEN_STRING:
         print("#0: <TOKEN STRING>")
-    elif t == "Callable":
+    elif t == StackType.CALLABLE:
         print("#0: <CALLABLE>")
     else:
         print(f"#0: <UNKNOWN {t}>")