diff --git a/docker/Dockerfile.build.fhi72.native_arm.ubuntu22 b/docker/Dockerfile.build.fhi72.native_arm.ubuntu22
index 4ea1bcd7bb..b796122bf3 100644
--- a/docker/Dockerfile.build.fhi72.native_arm.ubuntu22
+++ b/docker/Dockerfile.build.fhi72.native_arm.ubuntu22
@@ -78,7 +78,7 @@ RUN /bin/sh oaienv && \
     cd cmake_targets && \
     mkdir -p log && \
     ./build_oai \
-      --gNB \
+      --ninja --gNB \
       --build-lib "telnetsrv enbscope uescope nrscope" \
       -t oran_fhlib_5g --cmake-opt -Dxran_LOCATION=/opt/phy/fhi_lib/lib \
       --build-e2 --cmake-opt -DXAPP_MULTILANGUAGE=OFF --cmake-opt -DKPM_VERSION=$KPM_VERSION --cmake-opt -DE2AP_VERSION=$E2AP_VERSION \
diff --git a/docker/Dockerfile.build.fhi72.rhel9 b/docker/Dockerfile.build.fhi72.rhel9
index b8ad1560ba..472378935d 100644
--- a/docker/Dockerfile.build.fhi72.rhel9
+++ b/docker/Dockerfile.build.fhi72.rhel9
@@ -58,7 +58,7 @@ RUN /bin/sh oaienv && \
     mkdir -p log && \
     scl enable gcc-toolset-13 "\
     ./build_oai \
-      --gNB \
+      --ninja --gNB \
       --build-lib 'telnetsrv enbscope uescope nrscope' \
       -t oran_fhlib_5g --cmake-opt -Dxran_LOCATION=/opt/phy/fhi_lib/lib \
       --build-e2 --cmake-opt -DKPM_VERSION=$KPM_VERSION --cmake-opt -DE2AP_VERSION=$E2AP_VERSION" &&\
diff --git a/docker/Dockerfile.build.fhi72.ubuntu22 b/docker/Dockerfile.build.fhi72.ubuntu22
index 5da6d0b608..4674648285 100644
--- a/docker/Dockerfile.build.fhi72.ubuntu22
+++ b/docker/Dockerfile.build.fhi72.ubuntu22
@@ -68,7 +68,7 @@ RUN /bin/sh oaienv && \
     cd cmake_targets && \
     mkdir -p log && \
     ./build_oai \
-      --gNB \
+      --ninja --gNB \
       --build-lib "telnetsrv enbscope uescope nrscope" \
       -t oran_fhlib_5g --cmake-opt -Dxran_LOCATION=/opt/phy/fhi_lib/lib \
       --build-e2 --cmake-opt -DKPM_VERSION=$KPM_VERSION --cmake-opt -DE2AP_VERSION=$E2AP_VERSION \