diff --git a/tests/AudioBufferT.cpp b/tests/AudioBufferT.cpp
index bdd40671..ff483b13 100644
--- a/tests/AudioBufferT.cpp
+++ b/tests/AudioBufferT.cpp
@@ -64,8 +64,8 @@ TEST_CASE("[AudioBuffer] Iterators")
     std::fill(buffer.channelWriter(0), buffer.channelWriterEnd(0), fillValue);
     std::fill(buffer.channelWriter(1), buffer.channelWriterEnd(1), fillValue);
 
-    REQUIRE(std::all_of(buffer.channelReader(0), buffer.channelReaderEnd(0), [fillValue](auto value) { return value == fillValue; }));
-    REQUIRE(std::all_of(buffer.channelReader(1), buffer.channelReaderEnd(1), [fillValue](auto value) { return value == fillValue; }));
+    REQUIRE(std::all_of(buffer.channelReader(0), buffer.channelReaderEnd(0), [fillValue](float value) { return value == fillValue; }));
+    REQUIRE(std::all_of(buffer.channelReader(1), buffer.channelReaderEnd(1), [fillValue](float value) { return value == fillValue; }));
 }
 
 TEST_CASE("[AudioSpan] Constructions")
diff --git a/tests/BufferT.cpp b/tests/BufferT.cpp
index de98f482..04e38724 100644
--- a/tests/BufferT.cpp
+++ b/tests/BufferT.cpp
@@ -73,7 +73,7 @@ TEST_CASE("[Buffer] Resize 10 floats ")
     REQUIRE(buffer.resize(smallSize));
     checkBoundaries(buffer, smallSize);
 
-    REQUIRE(std::all_of(buffer.begin(), buffer.end(), [](auto value) { return value == 1.0f; }));
+    REQUIRE(std::all_of(buffer.begin(), buffer.end(), [](float value) { return value == 1.0f; }));
 
     REQUIRE(buffer.resize(bigSize));
     checkBoundaries(buffer, bigSize);
@@ -95,7 +95,7 @@ TEST_CASE("[Buffer] Resize 4096 floats ")
     REQUIRE(buffer.resize(smallSize));
     checkBoundaries(buffer, smallSize);
 
-    REQUIRE(std::all_of(buffer.begin(), buffer.end(), [](auto value) { return value == 1.0f; }));
+    REQUIRE(std::all_of(buffer.begin(), buffer.end(), [](float value) { return value == 1.0f; }));
 
     REQUIRE(buffer.resize(bigSize));
     checkBoundaries(buffer, bigSize);
@@ -117,7 +117,7 @@ TEST_CASE("[Buffer] Resize 65536 floats ")
     REQUIRE(buffer.resize(smallSize));
     checkBoundaries(buffer, smallSize);
 
-    REQUIRE(std::all_of(buffer.begin(), buffer.end(), [](auto value) { return value == 1.0f; }));
+    REQUIRE(std::all_of(buffer.begin(), buffer.end(), [](float value) { return value == 1.0f; }));
 
     REQUIRE(buffer.resize(bigSize));
     checkBoundaries(buffer, bigSize);
@@ -134,11 +134,11 @@ TEST_CASE("[Buffer] Copy and move")
     std::fill(copied.begin(), copied.end(), 2.0f);
     copied = buffer;
     checkBoundaries(copied, baseSize);
-    REQUIRE(std::all_of(copied.begin(), copied.end(), [](auto value) { return value == 1.0f; }));
+    REQUIRE(std::all_of(copied.begin(), copied.end(), [](float value) { return value == 1.0f; }));
 
     sfz::Buffer<float> copyConstructed { buffer };
     checkBoundaries(copyConstructed, baseSize);
-    REQUIRE(std::all_of(copyConstructed.begin(), copyConstructed.end(), [](auto value) { return value == 1.0f; }));
+    REQUIRE(std::all_of(copyConstructed.begin(), copyConstructed.end(), [](float value) { return value == 1.0f; }));
 
     // sfz::Buffer<float> moveConstructed { std::move(buffer) };
     // REQUIRE(buffer.empty());
diff --git a/tests/EventEnvelopesT.cpp b/tests/EventEnvelopesT.cpp
index 07218423..936f6dbf 100644
--- a/tests/EventEnvelopesT.cpp
+++ b/tests/EventEnvelopesT.cpp
@@ -134,7 +134,7 @@ TEST_CASE("[LinearEnvelope] 2 events, with another block call")
 TEST_CASE("[LinearEnvelope] 2 events, function")
 {
     sfz::LinearEnvelope<float> envelope;
-    envelope.setFunction([](auto x) { return 2 * x; });
+    envelope.setFunction([](float x) { return 2 * x; });
     envelope.registerEvent(2, 1.0f);
     envelope.registerEvent(6, 2.0f);
     std::array<float, 8> output;