diff --git a/core/state_processor_test.go b/core/state_processor_test.go
index 0e435600f8..1fbe8b1750 100644
--- a/core/state_processor_test.go
+++ b/core/state_processor_test.go
@@ -620,3 +620,48 @@ func getParentBlockHash(statedb *state.StateDB, number uint64) common.Hash {
 	binary.BigEndian.PutUint64(key[24:], ringIndex)
 	return statedb.GetState(params.HistoryStorageAddress, key)
 }
+
+func TestEIP7623(t *testing.T) {
+	type testsCases struct {
+		code    []byte
+		gas     uint64
+		gas7623 uint64
+	}
+
+	tests := []testsCases{
+		{
+			code:    common.FromHex(`0xff`),
+			gas:     53018,
+			gas7623: 53042,
+		},
+		{
+			code:    common.FromHex(`0x5f5f5500`),
+			gas:     53054,
+			gas7623: 53132,
+		},
+		{
+			code:    common.FromHex(`6060604052600a8060106000396000f360606040526008565b00`),
+			gas:     53382,
+			gas7623: 53952,
+		},
+		{
+			code:    common.FromHex(`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`),
+			gas:     80746,
+			gas7623: 122188,
+		},
+	}
+
+	for i, test := range tests {
+		haveGas, _ := IntrinsicGas(test.code, nil, true, true, true, true, false)
+		haveGas7623, _ := IntrinsicGas(test.code, nil, true, true, true, true, true)
+
+		if haveGas != test.gas {
+			t.Fatalf("invalid normal gas cost in test %v want %v got %v", i, test.gas, haveGas)
+		}
+
+		if haveGas7623 != test.gas7623 {
+			t.Fatalf("invalid normal gas cost in test %v want %v got %v", i, test.gas7623, haveGas7623)
+		}
+	}
+
+}