diff --git a/test/test_mixramp.cxx b/test/test_mixramp.cxx
index ca010f246..6f32fec04 100644
--- a/test/test_mixramp.cxx
+++ b/test/test_mixramp.cxx
@@ -13,25 +13,25 @@ TEST(MixRamp, Interpolate)
 	const char *input = "1.0 0.00;3.0 0.10;6.0 2.50;";
 
 	char *foo = strdup(input);
-	EXPECT_NEAR(double(0),
+	EXPECT_NEAR(0.,
 		    mixramp_interpolate(foo, 0).count(),
 		    0.05);
 	free(foo);
 
 	foo = strdup(input);
-	EXPECT_NEAR(float(0),
+	EXPECT_NEAR(0.,
 		    mixramp_interpolate(foo, 1).count(),
 		    0.005);
 	free(foo);
 
 	foo = strdup(input);
-	EXPECT_NEAR(float(0.1),
+	EXPECT_NEAR(0.1,
 		    mixramp_interpolate(foo, 3).count(),
 		    0.005);
 	free(foo);
 
 	foo = strdup(input);
-	EXPECT_NEAR(float(2.5),
+	EXPECT_NEAR(2.5,
 		    mixramp_interpolate(foo, 6).count(),
 		    0.01);
 	free(foo);
@@ -41,25 +41,25 @@ TEST(MixRamp, Interpolate)
 	free(foo);
 
 	foo = strdup(input);
-	EXPECT_NEAR(float(0.05),
+	EXPECT_NEAR(0.05,
 		    mixramp_interpolate(foo, 2).count(),
 		    0.05);
 	free(foo);
 
 	foo = strdup(input);
-	EXPECT_NEAR(float(1.3),
+	EXPECT_NEAR(1.3,
 		    mixramp_interpolate(foo, 4.5).count(),
 		    0.05);
 	free(foo);
 
 	foo = strdup(input);
-	EXPECT_NEAR(float(0.9),
+	EXPECT_NEAR(0.9,
 		    mixramp_interpolate(foo, 4).count(),
 		    0.05);
 	free(foo);
 
 	foo = strdup(input);
-	EXPECT_NEAR(float(1.7),
+	EXPECT_NEAR(1.7,
 		    mixramp_interpolate(foo, 5).count(),
 		    0.05);
 	free(foo);
diff --git a/test/test_pcm_volume.cxx b/test/test_pcm_volume.cxx
index f8b3fec59..11ea75303 100644
--- a/test/test_pcm_volume.cxx
+++ b/test/test_pcm_volume.cxx
@@ -154,7 +154,7 @@ TEST(PcmTest, VolumeFloat)
 
 	const auto _dest = ConstBuffer<float>::FromVoid(dest);
 	for (unsigned i = 0; i < N; ++i)
-		EXPECT_NEAR(_src[i] / 2, _dest[i], 1);
+		EXPECT_NEAR((double)_src[i] / 2., (double)_dest[i], 1.);
 
 	pv.Close();
 }