diff --git a/src/interfaces/ecpg/test/expected/sql-array.c b/src/interfaces/ecpg/test/expected/sql-array.c
index f5eb73d185..e48f5fac67 100644
--- a/src/interfaces/ecpg/test/expected/sql-array.c
+++ b/src/interfaces/ecpg/test/expected/sql-array.c
@@ -156,7 +156,7 @@ main (void)
 	ECPGdebug(1, stderr);
 
 	for (j = 0; j < 10; j++) {
-		char str[20];
+		char str[28];
 		numeric *value;
 		interval *inter;
 
diff --git a/src/interfaces/ecpg/test/sql/array.pgc b/src/interfaces/ecpg/test/sql/array.pgc
index 15c9cfa5f7..8ca9992e47 100644
--- a/src/interfaces/ecpg/test/sql/array.pgc
+++ b/src/interfaces/ecpg/test/sql/array.pgc
@@ -34,7 +34,7 @@ EXEC SQL END DECLARE SECTION;
 	ECPGdebug(1, stderr);
 
 	for (j = 0; j < 10; j++) {
-		char str[20];
+		char str[28];
 		numeric *value;
 		interval *inter;