diff --git a/dlls/api-ms-win-core-winrt-string-l1-1-0/api-ms-win-core-winrt-string-l1-1-0.spec b/dlls/api-ms-win-core-winrt-string-l1-1-0/api-ms-win-core-winrt-string-l1-1-0.spec
index 9fb5c1094b4..bc9035ca506 100644
--- a/dlls/api-ms-win-core-winrt-string-l1-1-0/api-ms-win-core-winrt-string-l1-1-0.spec
+++ b/dlls/api-ms-win-core-winrt-string-l1-1-0/api-ms-win-core-winrt-string-l1-1-0.spec
@@ -22,6 +22,6 @@
 @ stub WindowsReplaceString
 @ stub WindowsStringHasEmbeddedNull
 @ stub WindowsSubstring
-@ stub WindowsSubstringwithSpecifiedLength
+@ stub WindowsSubstringWithSpecifiedLength
 @ stub WindowsTrimStringEnd
 @ stub WindowsTrimStringStart