diff --git a/lib/std/os/windows.zig b/lib/std/os/windows.zig
index 71dfc70d3773b241fba5d06518f2d8e8740c12bb..af047bcdab5041afcb3576460fd8d73a553115e3 100644
--- a/lib/std/os/windows.zig
+++ b/lib/std/os/windows.zig
@@ -1567,6 +1567,7 @@ pub const CreateProcessError = error{
     FileNotFound,
     AccessDenied,
     InvalidName,
+    NameTooLong,
     Unexpected,
 };
 
@@ -1600,6 +1601,7 @@ pub fn CreateProcessW(
             .ACCESS_DENIED => return error.AccessDenied,
             .INVALID_PARAMETER => unreachable,
             .INVALID_NAME => return error.InvalidName,
+            .FILENAME_EXCED_RANGE => return error.NameTooLong,
             else => |err| return unexpectedError(err),
         }
     }