diff --git a/pcsx2/SPU2/SndOut_Cubeb.cpp b/pcsx2/SPU2/SndOut_Cubeb.cpp
index dd3bb0adc3..69b1d74a7a 100644
--- a/pcsx2/SPU2/SndOut_Cubeb.cpp
+++ b/pcsx2/SPU2/SndOut_Cubeb.cpp
@@ -53,7 +53,7 @@ private:
 	public:
 		ConvertedSampleReader() = delete;
 
-		ConvertedSampleReader(u64* pWritten)
+		explicit ConvertedSampleReader(u64* pWritten)
 			: written(pWritten)
 		{
 		}
diff --git a/pcsx2/SPU2/SndOut_XAudio2.cpp b/pcsx2/SPU2/SndOut_XAudio2.cpp
index 50ed0d11c5..b9a712974d 100644
--- a/pcsx2/SPU2/SndOut_XAudio2.cpp
+++ b/pcsx2/SPU2/SndOut_XAudio2.cpp
@@ -57,7 +57,7 @@ private:
 			return state.SamplesPlayed & (m_BufferSize - 1);
 		}
 
-		BaseStreamingVoice(uint numChannels)
+		explicit BaseStreamingVoice(uint numChannels)
 			: m_nBuffers(2)
 			, m_nChannels(numChannels)
 			, m_BufferSize(SndOutPacketSize * m_nChannels * PacketsPerBuffer)