diff --git a/BaseTools/Conf/gitattributes b/BaseTools/Conf/gitattributes
index 58b93e9d4c..319e890641 100644
--- a/BaseTools/Conf/gitattributes
+++ b/BaseTools/Conf/gitattributes
@@ -17,3 +17,14 @@
 *.fdf     diff=ini
 *.fdf.inc diff=ini
 *.inf     diff=ini
+*.c       diff=cpp
+*.C       diff=cpp
+*.cc      diff=cpp
+*.CC      diff=cpp
+*.cpp     diff=cpp
+*.Cpp     diff=cpp
+*.CPP     diff=cpp
+*.aslc    diff=cpp
+*.act     diff=cpp
+*.h       diff=cpp
+*.H       diff=cpp