diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index e860b36b3..47ee10ba6 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+2003-07-09  Christopher Faylor  <cgf@redhat.com>
+
+	* sysconf.cc (sysconf): Return processors online rather than bitmask
+	for _SC_NPROCESSORS_ONLN.
+
 2003-07-08  Christopher Faylor  <cgf@redhat.com>
 
 	* cygheap.cc (creturn): Set appropriate errno when out of memory.
diff --git a/winsup/cygwin/sysconf.cc b/winsup/cygwin/sysconf.cc
index 944afdd41..760208adc 100644
--- a/winsup/cygwin/sysconf.cc
+++ b/winsup/cygwin/sysconf.cc
@@ -90,7 +90,14 @@ sysconf (int in)
 	      case _SC_NPROCESSORS_CONF:
 	       return sbi.NumberProcessors;
 	      case _SC_NPROCESSORS_ONLN:
-	       return sbi.ActiveProcessors;
+	       {
+		 int i = 0;
+		 do
+		   if (sbi.ActiveProcessors & 1)
+		     i++;
+		 while (sbi.ActiveProcessors >>= 1);
+		 return i;
+	       }
 	      case _SC_PHYS_PAGES:
 		return sbi.NumberOfPhysicalPages;
 	      case _SC_AVPHYS_PAGES: