diff --git a/test/gtc/gtc_round.cpp b/test/gtc/gtc_round.cpp
index 112e3015..6e961e95 100644
--- a/test/gtc/gtc_round.cpp
+++ b/test/gtc/gtc_round.cpp
@@ -374,6 +374,9 @@ namespace ceilMultiple
 			{1, 4, 4, 0},
 			{1, 3, 3, 0},
 			{4, 3, 6, 0},
+			{4, 1, 4, 0},
+			{1, 1, 1, 0},
+			{7, 1, 7, 0},
 		};
 
 		int Error(0);