diff --git a/src/effects/Biquad.h b/src/effects/Biquad.h
index 788bb4a4e2d9aa95d1139a3ea496e580abeed46e..0f6ebf23503f165e94bc1f3cebe48657d654bdd8 100644
--- a/src/effects/Biquad.h
+++ b/src/effects/Biquad.h
@@ -1,5 +1,10 @@
 #ifndef __BIQUAD_H__
 #define __BIQUAD_H__
+
+#if 0
+//initialisations not supported in MSVC 2013.
+//Gives error C2905
+// Do not make conditional on compiler.
 typedef struct {
    float* pfIn {};
    float* pfOut {};
@@ -10,6 +15,22 @@ typedef struct {
    float fPrevOut {};
    float fPrevPrevOut {};
 } BiquadStruct;
+#else
+// WARNING: This structure may need initialisation.
+typedef struct {
+   float* pfIn;
+   float* pfOut;
+   float fNumerCoeffs [3];	// B0 B1 B2
+   float fDenomCoeffs [2];	// A1 A2
+   float fPrevIn;
+   float fPrevPrevIn;
+   float fPrevOut;
+   float fPrevPrevOut;
+} BiquadStruct;
+#endif
+
+
+
 void Biquad_Process (BiquadStruct* pBQ, int iNumSamples);
 void ComplexDiv (float fNumerR, float fNumerI, float fDenomR, float fDenomI, float* pfQuotientR, float* pfQuotientI);
 bool BilinTransform (float fSX, float fSY, float* pfZX, float* pfZY);