diff --git a/core/rec-x64/xbyak_base.h b/core/rec-x64/xbyak_base.h
index a5d07dd39..3bdd0569b 100644
--- a/core/rec-x64/xbyak_base.h
+++ b/core/rec-x64/xbyak_base.h
@@ -619,8 +619,8 @@ protected:
 		        cmp(rd, 0x80000000);	// indefinite integer
 		        jne(done, T_SHORT);
 		        xor_(eax, eax);
-		        static u32 zero;
-		        ucomiss(mapXRegister(op.rs1), dword[&zero]);
+		        pxor(xmm0, xmm0);
+		        ucomiss(mapXRegister(op.rs1), xmm0);
 		        setb(al);
 		        add(eax, 0x7fffffff);
 		        mov(rd, eax);
diff --git a/shell/apple/emulator-osx/reicast-osx.xcodeproj/project.pbxproj b/shell/apple/emulator-osx/reicast-osx.xcodeproj/project.pbxproj
index 7a2f59943..38ccf6e43 100644
--- a/shell/apple/emulator-osx/reicast-osx.xcodeproj/project.pbxproj
+++ b/shell/apple/emulator-osx/reicast-osx.xcodeproj/project.pbxproj
@@ -3061,7 +3061,7 @@
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_DYNAMIC_NO_PIC = NO;
-				GCC_FAST_MATH = YES;
+				GCC_FAST_MATH = NO;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					TARGET_NO_OPENMP,
@@ -3114,7 +3114,7 @@
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
-				GCC_FAST_MATH = YES;
+				GCC_FAST_MATH = NO;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					TARGET_NO_OPENMP,
 					CHD5_LZMA,