diff --git a/configure/os/CONFIG.win32-x86.win32-x86 b/configure/os/CONFIG.win32-x86.win32-x86
index 7d6c11b6b..6a5078d60 100644
--- a/configure/os/CONFIG.win32-x86.win32-x86
+++ b/configure/os/CONFIG.win32-x86.win32-x86
@@ -141,13 +141,16 @@ STATIC_LDFLAGS=
 RANLIB=
 
 #
-# option needed for parallel builds with Visual Studio 2015 onward
-#
+# option needed for parallel builds with Visual Studio 2013 onward
+# VS2012 and above have VisualStudioVersion, so just need to exclude 2012 (11.0)
 # -FS Force Synchronous PDB Writes
+#
 ifneq ($(VisualStudioVersion),)
+ifneq ($(VisualStudioVersion),11.0)
   OPT_CXXFLAGS_NO += -FS
   OPT_CFLAGS_NO += -FS
 endif
+endif
 
 
 #