diff --git a/lib/src/latvian/ExtraLav.gf b/lib/src/latvian/ExtraLav.gf
index 933ab3ef0..30875df6c 100644
--- a/lib/src/latvian/ExtraLav.gf
+++ b/lib/src/latvian/ExtraLav.gf
@@ -30,4 +30,6 @@ lin
 
   IAdvAdv adv = {s = "cik" ++ adv.s} ;
 
+  have_V3 = mkV3 (mkV "būt") nom_Prep dat_Prep Dat ;
+
 }
diff --git a/lib/src/latvian/ExtraLavAbs.gf b/lib/src/latvian/ExtraLavAbs.gf
index c57cb3ca9..1e44cb811 100644
--- a/lib/src/latvian/ExtraLavAbs.gf
+++ b/lib/src/latvian/ExtraLavAbs.gf
@@ -11,4 +11,6 @@ abstract ExtraLavAbs = Extra ** {
     youPl8fem_Pron : Pron ;
     they8fem_Pron : Pron ;
     it8fem_Pron : Pron ;
+
+    have_V3 : V3 ;
 }