diff --git a/src/isql/isql.epp b/src/isql/isql.epp
index d4385f94b6..537eb8b3f4 100644
--- a/src/isql/isql.epp
+++ b/src/isql/isql.epp
@@ -6894,7 +6894,7 @@ static bool checkSpecial(TEXT* const p, const int length, const double value)
 	if (isnan(value))
 		t = "NaN";
 	else if (isinf(value))
-		t = "Infinity";
+		t = value == -INFINITY ? "-Infinity" : "Infinity";
 	else
 		return false;