diff --git a/hw/xfree86/common/xf86Events.c b/hw/xfree86/common/xf86Events.c
index 785815c6a..e88fc3b3e 100644
--- a/hw/xfree86/common/xf86Events.c
+++ b/hw/xfree86/common/xf86Events.c
@@ -510,12 +510,14 @@ static void
 xf86SigioReadInput(int fd,
 		   void *closure)
 {
+    int errno_save = errno;
     int sigstate = xf86BlockSIGIO();
     InputInfoPtr pInfo = (InputInfoPtr) closure;
 
     pInfo->read_input(pInfo);
 
     xf86UnblockSIGIO(sigstate);
+    errno = errno_save;
 }
 
 /*