diff --git a/tests/composition/compositionTest.cpp b/tests/composition/compositionTest.cpp
index 7553162..7a99133 100644
--- a/tests/composition/compositionTest.cpp
+++ b/tests/composition/compositionTest.cpp
@@ -61,13 +61,13 @@ TEST_F(compositionTest, setGetComposition) {
     EXPECT_THROW(comp.setMassFraction("He-3", 0.3), std::runtime_error);
 
     EXPECT_NO_THROW(comp.setMassFraction({"H-1", "He-4"}, {0.5, 0.5}));
-    EXPECT_THROW(comp.getComposition("H-1"), std::runtime_error);
+    EXPECT_THROW(auto r = comp.getComposition("H-1"), std::runtime_error);
     EXPECT_TRUE(comp.finalize());
     EXPECT_DOUBLE_EQ(comp.getComposition("H-1").first.mass_fraction(), 0.5);
 
     EXPECT_NO_THROW(comp.setMassFraction({"H-1", "He-4"}, {0.6, 0.6}));
     EXPECT_FALSE(comp.finalize());
-    EXPECT_THROW(comp.getComposition("H-1"), std::runtime_error);
+    EXPECT_THROW(auto r = comp.getComposition("H-1"), std::runtime_error);
 }
 
 TEST_F(compositionTest, setGetNumberFraction) {
diff --git a/tests/eos/eosTest.cpp b/tests/eos/eosTest.cpp
index d98a25c..2092e9c 100644
--- a/tests/eos/eosTest.cpp
+++ b/tests/eos/eosTest.cpp
@@ -123,6 +123,8 @@ TEST_F(eosTest, eos_using_composition) {
     serif::eos::EOSOutput eosOutput;
     EXPECT_NO_THROW(eosOutput = EOS.get(eosInput));
     eosOutput = EOS.get(eosInput);
-    constexpr double absErr = 1e-8;
-    EXPECT_NEAR(eosOutput.pressure.total, 6.9548533046915791E+22, absErr);
+
+    const double pressureFraction = eosOutput.pressure.total / 6.9548533046915791E+22;
+    constexpr double relError = 1e-6;
+    EXPECT_NEAR(pressureFraction, 1.0, relError);
 }
diff --git a/tests/network/approx8Test.cpp b/tests/network/approx8Test.cpp
index 899eaf6..e58a41d 100644
--- a/tests/network/approx8Test.cpp
+++ b/tests/network/approx8Test.cpp
@@ -56,7 +56,7 @@ TEST_F(approx8Test, evaluate) {
     double H1MassFraction = netOut.composition.getMassFraction("H-1")/ 0.50166262445895604;
     double He4MassFraction = netOut.composition.getMassFraction("He-4") / 0.48172273720971226;
 
-    double relError = 1e-8;
+    double relError = 1e-6;
     EXPECT_NEAR(H1MassFraction, 1.0, relError);
     EXPECT_NEAR(He4MassFraction, 1.0, relError);
     EXPECT_NEAR(energyFraction, 1.0, relError);