diff --git a/.gitignore b/.gitignore
index 1b2d022aba88..43b4208ba656 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,8 +6,7 @@ __MACOSX
 *.bin
 *.o
 /arrow/
-build/
-./build/
+/build/
 **/build-msvc/
 **/CMakeFiles/
 **/CMakeCache.txt