diff --git a/tests/testunitconversion.cpp b/tests/testunitconversion.cpp
index 04f5fa1fb..a14240ea3 100644
--- a/tests/testunitconversion.cpp
+++ b/tests/testunitconversion.cpp
@@ -10,14 +10,14 @@ void TestUnitConversion::testUnitConversions()
 	QCOMPARE(IS_FP_SAME(ml_to_cuft(1000), 0.0353147), true);
 	QCOMPARE(IS_FP_SAME(cuft_to_l(1), 28.316847), true);
 	QCOMPARE(IS_FP_SAME(mm_to_feet(1000), 3.280840), true);
-	QCOMPARE(feet_to_mm(1), (long unsigned int)305);
+	QCOMPARE(feet_to_mm(1), 305L);
 	QCOMPARE(to_feet((depth_t){1000}), 3);
 	QCOMPARE(IS_FP_SAME(mkelvin_to_C(647000), 373.85), true);
 	QCOMPARE(IS_FP_SAME(mkelvin_to_F(647000), 704.93), true);
-	QCOMPARE(F_to_mkelvin(704.93), (unsigned long)647000);
-	QCOMPARE(C_to_mkelvin(373.85), (unsigned long)647000);
+	QCOMPARE(F_to_mkelvin(704.93), 647000UL);
+	QCOMPARE(C_to_mkelvin(373.85), 647000UL);
 	QCOMPARE(IS_FP_SAME(psi_to_bar(14.6959488), 1.01325), true);
-	QCOMPARE(psi_to_mbar(14.6959488), (long)1013);
+	QCOMPARE(psi_to_mbar(14.6959488), 1013L);
 	QCOMPARE(IS_FP_SAME(to_PSI((pressure_t){1013}), 14.6923228594), true);
 	QCOMPARE(IS_FP_SAME(bar_to_atm(1.013), 1.0), true);
 	QCOMPARE(IS_FP_SAME(mbar_to_atm(1013), 1.0), true);