diff --git a/docker/azahar-room/Dockerfile b/docker/azahar-room/Dockerfile
index 27ff65357..f1fedd7b9 100644
--- a/docker/azahar-room/Dockerfile
+++ b/docker/azahar-room/Dockerfile
@@ -7,7 +7,8 @@ FROM opensauce04/azahar-build-environment:latest AS builder
 COPY . /var/azahar-src
 
 RUN mkdir builddir && cd builddir && \
-    cmake /var/azahar-src -DENABLE_QT=OFF \
+    cmake /var/azahar-src -G Ninja \
+                          -DENABLE_QT=OFF \
                           -DENABLE_TESTS=OFF \
                           -DENABLE_ROOM=ON \
                           -DENABLE_ROOM_STANDALONE=ON \
@@ -17,7 +18,7 @@ RUN mkdir builddir && cd builddir && \
                           -DENABLE_LIBUSB=OFF \
                           -DENABLE_CUBEB=OFF \
                           -DENABLE_OPENAL=OFF && \
-    cmake --build . -j$(nproc) && \
+    ninja && \
     mv bin/Release/azahar-room /usr/local/bin/ && \
     cd .. && rm -rf builddir