diff --git a/proton b/proton
index 28f8228d..3fa0d3bd 100755
--- a/proton
+++ b/proton
@@ -980,6 +980,7 @@ class CompatData:
                     "vcomp1*.dll," +
                     "vccorlib1*.dll," +
                     "vcruntime1*.dll," +
+                    "ucrtbase.dll," +
 
                     #some games balk at ntdll symlink(?)
                     "ntdll.dll," +