diff --git a/seminar/autocomplete_light_registry.py b/seminar/autocomplete_light_registry.py
index 0b40dbcf..c82ba213 100644
--- a/seminar/autocomplete_light_registry.py
+++ b/seminar/autocomplete_light_registry.py
@@ -83,7 +83,7 @@ class ProblemAutocomplete(autocomplete_light.AutocompleteModelBase):
 
     attrs={
         # This will set the input placeholder attribute:
-        'placeholder': u'Řešitel',
+        'placeholder': u'Problém',
         # This will set the yourlabs.Autocomplete.minimumCharacters
         # options, the naming conversion is handled by jQuery
         'data-autocomplete-minimum-characters': 1,
diff --git a/seminar/models.py b/seminar/models.py
index d8967ba6..56b25627 100644
--- a/seminar/models.py
+++ b/seminar/models.py
@@ -290,7 +290,7 @@ class Cislo(SeminarModelBase):
 
     def predchozi(self):
         u"Vrací None, pokud je toto první"
-        return self.relativni_v_rocniku(1)
+        return self.relativni_v_rocniku(-1)
 
     def relativni_v_rocniku(self, rel_index):
         u"Číslo o `index` dále v ročníku. None pokud neexistuje."