diff --git a/infra/base-images/base-builder/Dockerfile b/infra/base-images/base-builder/Dockerfile
index 8fde3f4ed..7dc4f1ec9 100644
--- a/infra/base-images/base-builder/Dockerfile
+++ b/infra/base-images/base-builder/Dockerfile
@@ -114,6 +114,7 @@ RUN git clone https://github.com/AFLplusplus/AFLplusplus.git aflplusplus && \
     cd aflplusplus && \
     git checkout a7877416a87506424053e52e41f7a995c05367a4 && \
     wget --no-check-certificate -O oss.sh https://raw.githubusercontent.com/vanhauser-thc/binary_blobs/master/oss.sh && \
+    rm -rf .git && \
     chmod 755 oss.sh
 
 # Do precompiles before copying other scripts for better cache efficiency.