diff --git a/runtime/bin/file_win.cc b/runtime/bin/file_win.cc
index 32905f4..98d4bf7 100644
--- a/runtime/bin/file_win.cc
+++ b/runtime/bin/file_win.cc
@@ -455,6 +455,7 @@
     struct _stat64 st;
     const wchar_t* system_name = StringUtils::Utf8ToWide(name);
     int stat_status = _wstat64(system_name, &st);
+    free(const_cast<wchar_t*>(system_name));
     if (stat_status == 0) {
       data[kCreatedTime] = st.st_ctime;
       data[kModifiedTime] = st.st_mtime;
diff --git a/sdk/bin/docgen.bat b/sdk/bin/docgen.bat
index 220703a..136b7f9 100644
--- a/sdk/bin/docgen.bat
+++ b/sdk/bin/docgen.bat
@@ -25,9 +25,9 @@
 
 set BUILD_DIR=%SDK_DIR%\..\build\%DART_CONFIGURATION%
 if exist "%SNAPSHOT%" (
-  "%DART%" "%SNAPSHOT%" "docgen" "--sdk=%SDK_DIR" %*
+  "%DART%" "%SNAPSHOT%" "docgen" "--sdk=%SDK_DIR%" %*
 ) else (
-  "%BUILD_DIR%\dart-sdk\bin\dart" "--package-root=%BUILD_DIR%\packages" "%DOCGEN%" "--sdk=%SDK_DIR" %*
+  "%BUILD_DIR%\dart-sdk\bin\dart" "--package-root=%BUILD_DIR%\packages" "%DOCGEN%" "--sdk=%SDK_DIR%" %*
 )
 
 endlocal
diff --git a/tools/VERSION b/tools/VERSION
index e775b01..cfc2891 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 2
 PATCH 0
 PRERELEASE 5
-PRERELEASE_PATCH 12
+PRERELEASE_PATCH 13