diff --git a/backend-gpu/base/Dockerfile b/backend-gpu/base/Dockerfile
index 6d823d5..0250261 100644
--- a/backend-gpu/base/Dockerfile
+++ b/backend-gpu/base/Dockerfile
@@ -96,7 +96,7 @@ WORKDIR /tmp/builds
 RUN git clone --depth 1 --branch 'master' https://github.com/davisking/dlib.git && \
 	mkdir dlib/build && \
 	cd dlib/build && \
-	cmake .. -DDLIB_USE_CUDA=1 -DUSE_AVX_INSTRUCTIONS=0 -DLIB_NO_GUI_SUPPORT=0 && \
+	cmake .. -DLIB_USE_CUDA=1 -DUSE_AVX_INSTRUCTIONS=0 -DLIB_NO_GUI_SUPPORT=0 && \
 	cmake --build . && \
 	cd /tmp/builds/dlib && \
 	python3 setup.py install --no USE_AVX_INSTRUCTIONS --no USE_SSE4_INSTRUCTIONS && \