diff --git a/Source/Core/Common/Src/CPUDetect.cpp b/Source/Core/Common/Src/CPUDetect.cpp
index 99e43f5c46..93e9d25087 100644
--- a/Source/Core/Common/Src/CPUDetect.cpp
+++ b/Source/Core/Common/Src/CPUDetect.cpp
@@ -43,27 +43,25 @@ static inline void do_cpuid(unsigned int *eax, unsigned int *ebx,
 	// Note: EBX is reserved on Mac OS X and in PIC on Linux, so it has to
 	// restored at the end of the asm block.
 	__asm__ (
-		"pushq %%rbx;"
 		"cpuid;"
 		"movl  %%ebx,%1;"
-		"popq  %%rbx;"
 		: "=a" (*eax),
 		  "=S" (*ebx),
 		  "=c" (*ecx),
 		  "=d" (*edx)
 		: "a"  (*eax)
+		: "rbx"
 		);
 #else
 	__asm__ (
-		"pushl %%ebx;"
 		"cpuid;"
 		"movl  %%ebx,%1;"
-		"popl  %%ebx;"
 		: "=a" (*eax),
 		  "=S" (*ebx),
 		  "=c" (*ecx),
 		  "=d" (*edx)
 		: "a"  (*eax)
+		: "ebx"
 		);
 #endif
 }