diff --git a/BasiliskII/src/uae_cpu/fpu/fpu_x86.cpp b/BasiliskII/src/uae_cpu/fpu/fpu_x86.cpp
index 1cbaa18a..83afdf84 100644
--- a/BasiliskII/src/uae_cpu/fpu/fpu_x86.cpp
+++ b/BasiliskII/src/uae_cpu/fpu/fpu_x86.cpp
@@ -596,8 +596,8 @@ static uae_s32 extended_to_signed_32( float80 f ) REGPARAM;
 static uae_s32 extended_to_signed_32( float80 f )
 {
 	FPU_CONSISTENCY_CHECK_START();
-	uae_s32 tmp;
-	WORD sw_temp;
+	volatile uae_s32 tmp;
+	volatile WORD sw_temp;
 	
 /*	_asm {
 		MOV			EDI, [f]
@@ -638,8 +638,8 @@ static uae_s16 extended_to_signed_16( float80 f ) REGPARAM;
 static uae_s16 extended_to_signed_16( float80 f )
 {
 	FPU_CONSISTENCY_CHECK_START();
-	uae_s16 tmp;
-	WORD sw_temp;
+	volatile uae_s16 tmp;
+	volatile WORD sw_temp;
 
 /*	_asm {
 		MOV			EDI, [f]
@@ -678,8 +678,8 @@ static uae_s8 extended_to_signed_8( float80 f ) REGPARAM;
 static uae_s8 extended_to_signed_8( float80 f )
 {
 	FPU_CONSISTENCY_CHECK_START();
-	uae_s16 tmp;
-	WORD sw_temp;
+	volatile uae_s16 tmp;
+	volatile WORD sw_temp;
 	
 /*	_asm {
 		MOV			EDI, [f]
@@ -743,7 +743,7 @@ static double extended_to_double( float80 f ) REGPARAM;
 static double extended_to_double( float80 f )
 {
 	FPU_CONSISTENCY_CHECK_START();
-	double result;
+	volatile double result;
 
 /*	_asm {
 		MOV			ESI, [f]
@@ -881,8 +881,8 @@ static uae_u32 from_single( float80 f ) REGPARAM;
 static uae_u32 from_single( float80 f )
 {
 	FPU_CONSISTENCY_CHECK_START();
-	uae_u32 dest;
-	WORD sw_temp;
+	volatile uae_u32 dest;
+	volatile WORD sw_temp;
 
 /*	_asm {
 		MOV			EDI, [f]
@@ -929,8 +929,8 @@ static void from_double( float80 f, uae_u32 *wrd1, uae_u32 *wrd2 ) REGPARAM;
 static void from_double( float80 f, uae_u32 *wrd1, uae_u32 *wrd2 )
 {
 	FPU_CONSISTENCY_CHECK_START();
-	uae_u32 dest[2];
-	WORD sw_temp;
+	volatile uae_u32 dest[2];
+	volatile WORD sw_temp;
 
 /*	_asm {
 		MOV			EDI, [f]
@@ -1038,7 +1038,7 @@ static void do_fintrz( float80 dest, float80 src ) REGPARAM;
 static void do_fintrz( float80 dest, float80 src )
 {
 	FPU_CONSISTENCY_CHECK_START();
-	WORD cw_temp;
+	volatile WORD cw_temp;
 
 /*	_asm {
 		MOV			ESI, [src]
@@ -1980,7 +1980,7 @@ static void do_fsgldiv( float80 dest, float80 src ) REGPARAM;
 static void do_fsgldiv( float80 dest, float80 src )
 {
 	FPU_CONSISTENCY_CHECK_START();
-	WORD cw_temp;
+	volatile WORD cw_temp;
 /*	_asm {
 		FSTCW   cw_temp
 		and			cw_temp, ~X86_PRECISION_CONTROL_MASK
@@ -2059,7 +2059,7 @@ static void do_fsglmul( float80 dest, float80 src ) REGPARAM;
 static void do_fsglmul( float80 dest, float80 src )
 {
 	FPU_CONSISTENCY_CHECK_START();
-	WORD cw_temp;
+	volatile WORD cw_temp;
 
 /*	_asm {
 		FSTCW   cw_temp
@@ -2308,7 +2308,7 @@ static void from_pack(double src, uae_u32 * wrd1, uae_u32 * wrd2, uae_u32 * wrd3
 
 	D(bug("from_pack(%.04f) = %X,%X,%X\r\n",(float)src,*wrd1,*wrd2,*wrd3));
 
-	WORD sw_temp;
+	volatile WORD sw_temp;
 //	_asm FNSTSW sw_temp
 	_ASM("fnstsw %0" : "=m" (sw_temp));
 	if(sw_temp & SW_EXCEPTION_MASK) {