diff --git a/rime-install.bat b/rime-install.bat
index 8c9d325..fcc4bb6 100644
--- a/rime-install.bat
+++ b/rime-install.bat
@@ -375,6 +375,12 @@ set search_path=^
 %ProgramFiles%\Git\mingw%arch%\bin;^
 %ProgramFiles%\Git\usr\bin;
 
+rem find Custom Git in 32-bit cmd.exe
+if defined GIT_INSTALL_ROOT set search_path=%search_path%^
+%GIT_INSTALL_ROOT%\cmd;^
+%GIT_INSTALL_ROOT%\mingw%arch%\bin;^
+%GIT_INSTALL_ROOT%\usr\bin;
+
 rem find 64-bit Git in 32-bit cmd.exe
 if defined ProgramW6432 set search_path=%search_path%^
 %ProgramW6432%\Git\cmd;^