diff --git a/libmaxsi/c/hsrc/unistd.h b/libmaxsi/c/hsrc/unistd.h
index 5ae24953..6d794ebf 100644
--- a/libmaxsi/c/hsrc/unistd.h
+++ b/libmaxsi/c/hsrc/unistd.h
@@ -165,9 +165,10 @@ int isatty(int);
 int pipe(int [2]);
 ssize_t read(int, void*, size_t);
 unsigned sleep(unsigned);
-#if __POSIX_OBSOLETE <= 200112
+/*#if __POSIX_OBSOLETE <= 200112*/
+typedef unsigned int useconds_t;
 int usleep(useconds_t useconds);
-#endif
+/*#endif*/
 int unlink(const char*);
 ssize_t write(int, const void*, size_t);
 
diff --git a/sortix/scheduler.cpp b/sortix/scheduler.cpp
index 34afcd87..14636ce6 100644
--- a/sortix/scheduler.cpp
+++ b/sortix/scheduler.cpp
@@ -319,7 +319,12 @@ namespace Sortix
 		{
 			Thread* thread = currentthread;
 			uintmax_t timetosleep = ((uintmax_t) secs) * 1000ULL * 1000ULL;
-			if ( timetosleep == 0 ) { return; }
+			if ( timetosleep == 0 )
+			{
+				Switch(Syscall::InterruptRegs());
+				Syscall::AsIs();
+				return;
+			}
 			PutThreadToSleep(thread, timetosleep);
 			Syscall::Incomplete();
 		}
@@ -328,7 +333,12 @@ namespace Sortix
 		{
 			Thread* thread = currentthread;
 			uintmax_t timetosleep = usecs;
-			if ( timetosleep == 0 ) { return; }
+			if ( timetosleep == 0 )
+			{
+				Switch(Syscall::InterruptRegs());
+				Syscall::AsIs();
+				return;
+			}
 			PutThreadToSleep(thread, timetosleep);
 			Syscall::Incomplete();
 		}