--- a/security/certverifier/moz.build
+++ b/security/certverifier/moz.build
@@ -31,16 +31,17 @@ DIRS += [
     '../pkix',
 ]
 
 CXXFLAGS += ['-Wall']
 if CONFIG['_MSC_VER']:
   # -Wall with Visual C++ enables too many problematic warnings
   CXXFLAGS += [
     '-wd4355', # 'this' used in base member initializer list
+    '-wd4464', # relative include path contains '..'
     '-wd4480', # nonstandard extension used: specifying underlying type for
                # enum 'enum'
     '-wd4481', # nonstandard extension used: override specifier 'keyword'
     '-wd4510', # default constructor could not be generated
     '-wd4512', # assignment operator could not be generated
     '-wd4514', # 'function': unreferenced inline function has been removed
     '-wd4610', # struct 'symbol' can never be instantiated - user defined
                # constructor required

--- a/security/pkix/warnings.mozbuild
+++ b/security/pkix/warnings.mozbuild
@@ -12,16 +12,17 @@ if CONFIG['CLANG_CXX']:
     '-Wno-weak-vtables', # We rely on the linker to merge the duplicate vtables.
   ]
 elif CONFIG['_MSC_VER']:
   CXXFLAGS += [
     '-sdl', # Enable additional security checks based on Microsoft's SDL.
 
     '-Wall',
 
+    '-wd4464', # relative include path contains '..'
     '-wd4514', # 'function': unreferenced inline function has been removed
     '-wd4668', # warning C4668: 'X' is not defined as a preprocessor macro,
                # replacing with '0' for '#if/#elif'.
     '-wd4710', # 'function': function not inlined
     '-wd4711', # function 'function' selected for inline expansion
     '-wd4800', # forcing value to bool 'true' or 'false'
     '-wd4820', # 'bytes' bytes padding added after construct 'member_name'