diff --git a/.gitignore b/.gitignore
index 1bf4aee93e8695f876a3ccb936a988758785ecbc..0d4f5aa94fa9c3e85fe9e68b5debdfe14d8bbf18 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,6 +54,7 @@ CLASS_R2D_S
 
 # Google Tests
 GTest/RunTest
+GTest/gtest-all.o
 
 # CLASS files
 DATA_BASES/DECAY/ALL/Decay.idx