diff --git a/v4l2loopback-dkms.spec b/v4l2loopback-dkms.spec
index 786fba0..c4ec379 100644
--- a/v4l2loopback-dkms.spec
+++ b/v4l2loopback-dkms.spec
@@ -1,6 +1,6 @@
 Name:          v4l2loopback-dkms
 Version:       0.13.2
-Release:       1mamba
+Release:       2mamba
 Summary:       A kernel module to create V4L2 loopback devices
 Group:         System/Kernel and Hardware
 Vendor:        openmamba
@@ -27,9 +27,12 @@ A kernel module to create V4L2 loopback devices.
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 make DESTDIR=%{buildroot} PREFIX=%{_prefix} install-utils install-man
 
-install -D -m0644 v4l2loopback.c v4l2loopback_formats.h dkms.conf Makefile \
+install -D -m0644  v4l2loopback.h v4l2loopback.c v4l2loopback_formats.h dkms.conf Kbuild Makefile \
    -t %{buildroot}%{_prefix}/src/v4l2loopback-%{version}
 
+%check
+%make KERNEL_DIR=/usr/src/linux-mamba-%{_target_cpu}
+
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 
@@ -53,6 +56,9 @@ fi
 %doc AUTHORS COPYING
 
 %changelog
+* Tue Dec 17 2024 Silvan Calarco <silvan.calarco@mambasoft.it> 0.13.2-2mamba
+- install more required files for dkms build
+
 * Sat May 25 2024 Automatic Build System <autodist@openmamba.org> 0.13.2-1mamba
 - automatic version update by autodist