diff --git a/projects/graphicsmagick/Dockerfile b/projects/graphicsmagick/Dockerfile
index 3834089ad..e1da2ade1 100644
--- a/projects/graphicsmagick/Dockerfile
+++ b/projects/graphicsmagick/Dockerfile
@@ -17,9 +17,9 @@
 FROM gcr.io/oss-fuzz-base/base-builder
 MAINTAINER alex.gaynor@gmail.com
 RUN apt-get update && apt-get install -y mercurial automake autopoint cmake libtool nasm pkg-config
-RUN hg clone http://hg.code.sf.net/p/graphicsmagick/code graphicsmagick || \
-    hg clone http://hg.code.sf.net/p/graphicsmagick/code graphicsmagick || \
-    hg clone http://hg.code.sf.net/p/graphicsmagick/code graphicsmagick
+RUN hg clone -b default http://hg.code.sf.net/p/graphicsmagick/code graphicsmagick || \
+    hg clone -b default http://hg.code.sf.net/p/graphicsmagick/code graphicsmagick || \
+    hg clone -b default http://hg.code.sf.net/p/graphicsmagick/code graphicsmagick
 
 RUN git clone --depth 1 https://gitlab.com/libtiff/libtiff
 RUN git clone --depth 1 https://github.com/webmproject/libwebp