Index: uspace/lib/c/arch/amd64/include/libarch/tls.h
===================================================================
--- uspace/lib/c/arch/amd64/include/libarch/tls.h	(revision 0bde223e050d973e294d5b0527bd0cdbd2a88494)
+++ uspace/lib/c/arch/amd64/include/libarch/tls.h	(revision 2f89387275875a41f77d4816c3ae2f84a6655771)
@@ -55,5 +55,5 @@
 
 	asm volatile ("movq %%fs:0, %0" : "=r" (retval));
-	return retval;
+	return (tcb_t *)retval;
 }