diff --git a/source/lib/sysdep/arch/x86_x64/x86_x64.cpp b/source/lib/sysdep/arch/x86_x64/x86_x64.cpp
index ca039421a8..be0c20775e 100644
--- a/source/lib/sysdep/arch/x86_x64/x86_x64.cpp
+++ b/source/lib/sysdep/arch/x86_x64/x86_x64.cpp
@@ -79,7 +79,24 @@ static void cpuid(x86_x64_CpuidRegs* regs)
 	cassert(sizeof(*regs) == 4*sizeof(int));
 	__cpuidex((int*)regs, regs->eax, regs->ecx);
 #elif GCC_VERSION
-	__asm__ __volatile__ ("cpuid": "=a" (regs->eax), "=b" (regs->ebx), "=c" (regs->ecx), "=d" (regs->edx) : "a" (regs->eax), "c" (regs->ecx));
+// Need to preserve the PIC register (ebx/rbx) in case GCC is using it
+# if ARCH_AMD64
+	__asm__ __volatile__ (
+			"pushq %%rbx\n"
+			"cpuid\n"
+			"movl %%ebx, %1\n"
+			"popq %%rbx\n"
+			: "=a" (regs->eax), "=m" (regs->ebx), "=c" (regs->ecx), "=d" (regs->edx)
+			: "a" (regs->eax), "c" (regs->ecx));
+# else
+	__asm__ __volatile__ (
+			"pushl %%ebx\n"
+			"cpuid\n"
+			"movl %%ebx, %1\n"
+			"popl %%ebx\n"
+			: "=a" (regs->eax), "=m" (regs->ebx), "=c" (regs->ecx), "=d" (regs->edx)
+			: "a" (regs->eax), "c" (regs->ecx));
+# endif
 #else
 # if ARCH_AMD64
 	amd64_asm_cpuid(regs);