diff --git a/scripts/build/builders/nrf.py b/scripts/build/builders/nrf.py
index b2a89f3d690453..4bfb80961ab8e6 100644
--- a/scripts/build/builders/nrf.py
+++ b/scripts/build/builders/nrf.py
@@ -144,21 +144,25 @@ def generate(self):
 
                     raise Exception('ZEPHYR_BASE validation failed')
 
-            overlays = []
+            flags = []
             if self.enable_rpcs:
-                overlays.append("-DOVERLAY_CONFIG=rpc.overlay")
+                flags.append("-DOVERLAY_CONFIG=rpc.overlay")
+
+            if self.board == NrfBoard.NRF52840DONGLE:
+                flags.append("-DCONF_FILE=prj_no_dfu.conf")
+
+            build_flags = " -- " + " ".join(flags) if len(flags) > 0 else ""
 
             cmd = '''
 source "$ZEPHYR_BASE/zephyr-env.sh";
 export GNUARMEMB_TOOLCHAIN_PATH="$PW_ARM_CIPD_INSTALL_DIR";
-west build --cmake-only -d {outdir} -b {board} {sourcedir}{overlayflags}
+west build --cmake-only -d {outdir} -b {board} {sourcedir}{build_flags}
         '''.format(
                 outdir=shlex.quote(self.output_dir),
                 board=self.board.GnArgName(),
                 sourcedir=shlex.quote(os.path.join(
                     self.root, self.app.AppPath(), 'nrfconnect')),
-                overlayflags=" -- " +
-                " ".join(overlays) if len(overlays) > 0 else ""
+                build_flags=build_flags
             ).strip()
             self._Execute(['bash', '-c', cmd],
                           title='Generating ' + self.identifier)
diff --git a/scripts/build/testdata/build_all_except_host.txt b/scripts/build/testdata/build_all_except_host.txt
index 81ae8a8de857b0..47f3ad2bcc53ad 100644
--- a/scripts/build/testdata/build_all_except_host.txt
+++ b/scripts/build/testdata/build_all_except_host.txt
@@ -851,7 +851,7 @@ west build --cmake-only -d {out}/nrf-nrf52840dk-shell -b nrf52840dk_nrf52840 {ro
 # Generating nrf-nrf52840dongle-light
 bash -c 'source "$ZEPHYR_BASE/zephyr-env.sh";
 export GNUARMEMB_TOOLCHAIN_PATH="$PW_ARM_CIPD_INSTALL_DIR";
-west build --cmake-only -d {out}/nrf-nrf52840dongle-light -b nrf52840dongle_nrf52840 {root}/examples/lighting-app/nrfconnect'
+west build --cmake-only -d {out}/nrf-nrf52840dongle-light -b nrf52840dongle_nrf52840 {root}/examples/lighting-app/nrfconnect -- -DCONF_FILE=prj_no_dfu.conf'
 
 # Generating nrf-nrf5340dk-light
 bash -c 'source "$ZEPHYR_BASE/zephyr-env.sh";