diff --git a/src/veracrypt/veracrypt.py b/src/veracrypt/veracrypt.py
index 382cdb9..b3721a1 100644
--- a/src/veracrypt/veracrypt.py
+++ b/src/veracrypt/veracrypt.py
@@ -581,7 +581,11 @@ def _get_password(self, cmd: Optional[List[str]]) -> Tuple[Optional[str], int]:
         try:
             index = cmd.index(pword_option) + 1
             pword = cmd[index]
+            if pword == "":
+                raise ValueError("Password option provided without a value.")
         except ValueError:
             pword = None
             index = -1
+        except IndexError as exc:
+            raise ValueError("Password option provided without a value.") from exc
         return pword, index