diff --git a/src/app/tests/suites/certification/Test_TC_SC_5_1.yaml b/src/app/tests/suites/certification/Test_TC_SC_5_1.yaml
index 812dd4732ba046..7bfb258663ed7c 100644
--- a/src/app/tests/suites/certification/Test_TC_SC_5_1.yaml
+++ b/src/app/tests/suites/certification/Test_TC_SC_5_1.yaml
@@ -97,11 +97,11 @@ tests:
                         GroupKeySetID: 0x01a3,
                         GroupKeySecurityPolicy: 0,
                         EpochKey0: "hex:d0d1d2d3d4d5d6d7d8d9dadbdcdddedf",
-                        EpochStartTime0: 2220000,
+                        EpochStartTime0: 1,
                         EpochKey1: "hex:d1d1d2d3d4d5d6d7d8d9dadbdcdddedf",
-                        EpochStartTime1: 2220001,
+                        EpochStartTime1: 18446744073709551613,
                         EpochKey2: "hex:d2d1d2d3d4d5d6d7d8d9dadbdcdddedf",
-                        EpochStartTime2: 2220002,
+                        EpochStartTime2: 18446744073709551614,
                     }
 
     - label: "Step 3: TH binds GroupId to GroupKeySet"
@@ -176,11 +176,11 @@ tests:
                         GroupKeySetID: 0x01a3,
                         GroupKeySecurityPolicy: 0,
                         EpochKey0: null,
-                        EpochStartTime0: 2220000,
+                        EpochStartTime0: 1,
                         EpochKey1: null,
-                        EpochStartTime1: 2220001,
+                        EpochStartTime1: 18446744073709551613,
                         EpochKey2: null,
-                        EpochStartTime2: 2220002,
+                        EpochStartTime2: 18446744073709551614,
                     }
 
     - label: