diff --git a/src/backend/utils/adt/formatting.c b/src/backend/utils/adt/formatting.c
index 40a353f5134..576db95c1be 100644
--- a/src/backend/utils/adt/formatting.c
+++ b/src/backend/utils/adt/formatting.c
@@ -2507,7 +2507,7 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out, Oid col
 				s += strlen(s);
 				if (tm->tm_gmtoff % SECS_PER_HOUR != 0)
 				{
-					sprintf(s, ":%02ld", (tm->tm_gmtoff % SECS_PER_HOUR) / SECS_PER_MINUTE);
+					sprintf(s, ":%02ld", abs(tm->tm_gmtoff % SECS_PER_HOUR) / SECS_PER_MINUTE);
 					s += strlen(s);
 				}
 				break;