diff --git a/projects/liblouis/Dockerfile b/projects/liblouis/Dockerfile
index c5b3d7f87614..77f9c9910c1d 100644
--- a/projects/liblouis/Dockerfile
+++ b/projects/liblouis/Dockerfile
@@ -19,4 +19,8 @@ RUN apt-get update && apt-get install -y make autoconf automake libtool \
   pkg-config zlib1g-dev libpci-dev
 RUN git clone --depth 1 https://github.com/liblouis/liblouis
 WORKDIR liblouis
+RUN sed -i 's/main/main2/g' tests/fuzzing/fuzz_backtranslate.c && \
+    sed -i 's/main/main2/g' tests/fuzzing/fuzz_translate_generic.c && \
+    sed -i 's/LLVMFuzzerRunDriver(&argc/\/\/LLVMFuzzerRunDriver(&argc/g' tests/fuzzing/fuzz_backtranslate.c && \
+    sed -i 's/LLVMFuzzerRunDriver(&argc/\/\/LLVMFuzzerRunDriver(&argc/g' tests/fuzzing/fuzz_translate_generic.c
 COPY build.sh run_tests.sh $SRC/
diff --git a/projects/liblouis/build.sh b/projects/liblouis/build.sh
index e51623a492bd..fda807cd038e 100755
--- a/projects/liblouis/build.sh
+++ b/projects/liblouis/build.sh
@@ -15,8 +15,4 @@
 #
 ################################################################################
 
-sed -i 's/main/main2/g' tests/fuzzing/fuzz_backtranslate.c
-sed -i 's/main/main2/g' tests/fuzzing/fuzz_translate_generic.c
-sed -i 's/LLVMFuzzerRunDriver(&argc/\/\/LLVMFuzzerRunDriver(&argc/g' tests/fuzzing/fuzz_backtranslate.c
-sed -i 's/LLVMFuzzerRunDriver(&argc/\/\/LLVMFuzzerRunDriver(&argc/g' tests/fuzzing/fuzz_translate_generic.c
 $SRC/liblouis/tests/fuzzing/build.sh