diff --git a/extern/SAASound/src/SAAImpl.cpp b/extern/SAASound/src/SAAImpl.cpp
index 6602feee..55665b6d 100644
--- a/extern/SAASound/src/SAAImpl.cpp
+++ b/extern/SAASound/src/SAAImpl.cpp
@@ -26,7 +26,9 @@ m_uParamRate(0),
 m_nClockRate(EXTERNAL_CLK_HZ),
 m_nSampleRate(SAMPLE_RATE_HZ),
 m_nOversample(DEFAULT_OVERSAMPLE),
-m_bHighpass(false)
+m_bHighpass(false),
+filterout_z1_left_mixed(0),
+filterout_z1_right_mixed(0)
 {
 #ifdef USE_CONFIG_FILE
 	m_Config.ReadConfig();
@@ -301,7 +303,6 @@ void scale_for_output(unsigned int left_input, unsigned int right_input,
 void CSAASoundInternal::GenerateMany(BYTE* pBuffer, unsigned long nSamples, DivDispatchOscBuffer** oscBuf)
 {
 	unsigned int left_mixed, right_mixed;
-	static double filterout_z1_left_mixed = 0, filterout_z1_right_mixed = 0;
 
 #if defined(DEBUGSAA) || defined(USE_CONFIG_FILE)
 	BYTE* pBufferStart = pBuffer;
diff --git a/extern/SAASound/src/SAAImpl.h b/extern/SAASound/src/SAAImpl.h
index f5f58d55..50de979d 100755
--- a/extern/SAASound/src/SAAImpl.h
+++ b/extern/SAASound/src/SAAImpl.h
@@ -36,6 +36,7 @@ private:
 	unsigned int m_nSampleRate;
 	unsigned int m_nOversample;
 	bool m_bHighpass;
+  double filterout_z1_left_mixed, filterout_z1_right_mixed;
 #ifdef USE_CONFIG_FILE
 	SAAConfig m_Config;
 #endif