diff --git a/pfbudget/categories.py b/pfbudget/categories.py
index e045c32..398d8d2 100644
--- a/pfbudget/categories.py
+++ b/pfbudget/categories.py
@@ -56,11 +56,10 @@ def categorize_data(db: DBManager):
     # 3rd) Classify all else based on regex
     if transactions := db.get_uncategorized_transactions():
         for transaction in transactions:
-            if not transaction.category:
-                for name, category in categories.items():
-                    if matches(transaction, category):
-                        transaction.category = name
-                        break
+            for name, category in categories.items():
+                if matches(transaction, category):
+                    transaction.category = name
+                    break
         db.update_categories(
             [transaction for transaction in transactions if transaction.category]
         )
@@ -150,7 +149,10 @@ def nulls(db: DBManager) -> None:
 def matches(transaction: Transaction, category: Options):
     if not category.regex:
         return False
-    return any(
-        re.compile(pattern).search(transaction.description.lower())
-        for pattern in category.regex
-    )
+    try:
+        return any(
+            re.compile(pattern).search(transaction.description.lower())
+            for pattern in category.regex
+        )
+    except re.error as e:
+        print(f"{e}{transaction} {category}")
diff --git a/pfbudget/graph.py b/pfbudget/graph.py
index 59a2820..42034f0 100644
--- a/pfbudget/graph.py
+++ b/pfbudget/graph.py
@@ -41,7 +41,7 @@ def monthly(
         ]
     )
 
-    plt.figure(figsize=(30, 10))
+    plt.figure(tight_layout=True)
     plt.plot(
         list(rrule(MONTHLY, dtstart=start.replace(day=1), until=end.replace(day=1))),
         [groups["income"] for _, groups in monthly_transactions],
@@ -60,7 +60,6 @@ def monthly(
         ],
     )
     plt.legend(loc="upper left")
-    plt.tight_layout()
     if args["save"]:
         plt.savefig("graph.png")
     else:
diff --git a/pfbudget/parsers.py b/pfbudget/parsers.py
index 08aa8ce..6fab891 100644
--- a/pfbudget/parsers.py
+++ b/pfbudget/parsers.py
@@ -31,7 +31,20 @@ Options = namedtuple(
         "MasterCard",
         "AmericanExpress",
     ],
-    defaults=["", "", "", 1, None, Index(), Index(), False, None, None, None, None],
+    defaults=[
+        "",
+        "",
+        "",
+        1,
+        None,
+        Index(),
+        Index(),
+        False,
+        None,
+        None,
+        None,
+        None,
+    ],
 )
 
 
@@ -88,6 +101,7 @@ class Parser:
             for line in list(open(self.filename, encoding=self.options.encoding))[
                 self.options.start - 1 : self.options.end
             ]
+            if len(line) > 2
         ]
         return transactions
 
@@ -100,9 +114,10 @@ class Parser:
                 elif line[options.credit.value]:
                     index = options.credit
             elif options.debit.date != options.credit.date:
-                if line[options.debit.date]:
+                negate = 1 if (options.debit.negate or options.credit.negate) else -1
+                if (negate * utils.parse_decimal(line[options.debit.value])) < 0:
                     index = options.debit
-                elif line[options.credit.date]:
+                else:
                     index = options.credit
             elif options.debit.text != options.credit.text:
                 if line[options.debit.text]:
diff --git a/pfbudget/utils.py b/pfbudget/utils.py
index 7061439..ea5986c 100644
--- a/pfbudget/utils.py
+++ b/pfbudget/utils.py
@@ -1,5 +1,5 @@
 from datetime import date, datetime, timedelta
-from decimal import Decimal
+from decimal import Decimal, InvalidOperation
 from pathlib import Path
 
 
@@ -21,15 +21,18 @@ def parse_decimal(s: str) -> Decimal:
         return Decimal(s)
     except ValueError:
         pass
-    s = s.strip().replace(u"\xa0", "").replace(" ", "")
-    s = s.strip().replace("€", "").replace("+", "")
-    if s.rfind(",") > s.rfind("."):
-        s = s.replace(".", "")
-        i = s.rfind(",")
-        li = list(s)
-        li[i] = "."
-        s = "".join(li)
-    return Decimal(s.replace(",", ""))
+    try:
+        d = s.strip().replace("\xa0", "").replace(" ", "")
+        d = d.replace("€", "").replace("+", "").replace("EUR", "").strip()
+        if d.rfind(",") > d.rfind("."):
+            d = d.replace(".", "")
+            i = d.rfind(",")
+            li = list(d)
+            li[i] = "."
+            d = "".join(li)
+        return Decimal(d.replace(",", ""))
+    except InvalidOperation:
+        raise InvalidOperation(f"{s} -> {d}")
 
 
 def find_credit_institution(fn, banks, creditcards):
@@ -47,10 +50,10 @@ def find_credit_institution(fn, banks, creditcards):
     if not bank:
         raise WrongFilenameError
 
-    if bank not in banks:
-        raise BankNotAvailableError
-    if cc and cc not in creditcards:
-        raise CreditCardNotAvailableError
+    if bank.lower() not in [bank.lower() for bank in banks]:
+        raise BankNotAvailableError(f"{fn}: {banks}")
+    if cc and cc.lower() not in [cc.lower() for cc in creditcards]:
+        raise CreditCardNotAvailableError(f"{fn}: {banks}")
 
     return bank, cc