diff --git a/meeat.procrusql b/meeat.procrusql
index e0f9670..cc24a48 100644
--- a/meeat.procrusql
+++ b/meeat.procrusql
@@ -30,14 +30,14 @@ column bod keychange timestamptz default now()
 table date_vote
 column date_vote date int not null references date
 column date_vote bod int not null references bod
-column date_vote preference float4 not null
+column date_vote preference float4
 
 table time_vote
 column time_vote time int not null references time
 column time_vote bod int not null references bod
-column time_vote preference float4 not null
+column time_vote preference float4
 
 table place_vote
 column place_vote place int not null references place
 column place_vote bod int not null references bod
-column place_vote preference float4 not null
+column place_vote preference float4