diff --git a/contrib/pg_trgm/trgm_gist.c b/contrib/pg_trgm/trgm_gist.c
index 43afd11fa67..0b5b349bbe9 100644
--- a/contrib/pg_trgm/trgm_gist.c
+++ b/contrib/pg_trgm/trgm_gist.c
@@ -900,7 +900,7 @@ gtrgm_picksplit(PG_FUNCTION_ARGS)
 			else
 				size_alpha = SIGLENBIT(siglen) -
 					sizebitvec((cache[j].allistrue) ? GETSIGN(datum_l) :
-							   GETSIGN(cache[j].sign),
+							   cache[j].sign,
 							   siglen);
 		}
 		else
@@ -913,7 +913,7 @@ gtrgm_picksplit(PG_FUNCTION_ARGS)
 			else
 				size_beta = SIGLENBIT(siglen) -
 					sizebitvec((cache[j].allistrue) ? GETSIGN(datum_r) :
-							   GETSIGN(cache[j].sign),
+							   cache[j].sign,
 							   siglen);
 		}
 		else