diff --git a/llvm/utils/lit/lit/discovery.py b/llvm/utils/lit/lit/discovery.py
index a5902d365df3..e276829db39d 100644
--- a/llvm/utils/lit/lit/discovery.py
+++ b/llvm/utils/lit/lit/discovery.py
@@ -48,6 +48,7 @@ def getTestSuite(item, litConfig, cache):
         # configuration to load instead.
         config_map = litConfig.params.get('config_map')
         if config_map:
+            cfgpath = os.path.realpath(cfgpath)
             cfgpath = os.path.normpath(cfgpath)
             cfgpath = os.path.normcase(cfgpath)
             target = config_map.get(cfgpath)
diff --git a/llvm/utils/llvm-lit/llvm-lit.in b/llvm/utils/llvm-lit/llvm-lit.in
index efad97ade7e2..a12056dcc559 100755
--- a/llvm/utils/llvm-lit/llvm-lit.in
+++ b/llvm/utils/llvm-lit/llvm-lit.in
@@ -7,6 +7,7 @@ config_map = {}
 
 def map_config(source_dir, site_config):
     global config_map
+    source_dir = os.path.realpath(source_dir)
     source_dir = os.path.normpath(source_dir)
     source_dir = os.path.normcase(source_dir)
     site_config = os.path.normpath(site_config)