diff --git a/fixes-for-5.15.patch b/fixes-for-5.15.patch
new file mode 100644
index 0000000..67c0f08
--- /dev/null
+++ b/fixes-for-5.15.patch
@@ -0,0 +1,19 @@
+
+Index: VirtualBox-6.1.26/include/iprt/stdarg.h
+===================================================================
+--- VirtualBox-6.1.26.orig/include/iprt/stdarg.h
++++ VirtualBox-6.1.26/include/iprt/stdarg.h
+@@ -44,7 +44,12 @@
+ #   define __builtin_stdarg_start __builtin_va_start
+ #  endif
+ # else
+-#  include <stdarg.h>
++#  include <linux/version.h>
++#  if LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0)
++#   include <stdarg.h>
++#  else
++#   include <linux/stdarg.h>
++#  endif
+ # endif
+ #endif
+ 
diff --git a/virtualbox.changes b/virtualbox.changes
index 283edaa..730e08f 100644
--- a/virtualbox.changes
+++ b/virtualbox.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Sep  8 04:54:25 UTC 2021 - Larry Finger <Larry.Finger@gmail.com>
+
+- Add file "fixes-for-5.15.patch" to fix builds on kernel 5.15.
+
 -------------------------------------------------------------------
 Mon Aug 23 16:12:57 UTC 2021 - Larry Finger <Larry.Finger@gmail.com>
 
diff --git a/virtualbox.spec b/virtualbox.spec
index 62c05ad..2b9646d 100644
--- a/virtualbox.spec
+++ b/virtualbox.spec
@@ -178,6 +178,7 @@ Patch141:       vb-6.1.16-modal-dialog-parent.patch
 Patch142:       fixes_for_5.14.patch
 Patch143:       fix_ordering_of_qt_includes.patch
 Patch144:       fixes_for_leap15.4.patch
+Patch145:       fixes-for-5.15.patch
 Patch999:       virtualbox-fix-ui-background-color.patch
 #
 # Common BuildRequires for both virtualbox and virtualbox-kmp
@@ -308,7 +309,9 @@ the terms of the GNU Public License (GPL).
 
 
 
+
 ##########################################
+
 %package qt
 Summary:        Qt GUI part for %{name}
 Group:          System/Emulators/PC
@@ -331,7 +334,9 @@ This package contains the code for the GUI used to control VMs.
 
 
 
+
 #########################################
+
 %package websrv
 Summary:        WebService GUI part for %{name}
 Group:          System/Emulators/PC
@@ -348,7 +353,9 @@ The VirtualBox web server is used to control headless VMs using a browser.
 
 
 
+
 #########################################
+
 %package guest-x11
 Summary:        VirtualBox X11 drivers for mouse and video
 Group:          System/X11/Servers/XF86_4
@@ -367,7 +374,9 @@ This package contains X11 guest utilities and X11 guest mouse and video drivers
 
 
 
+
 ###########################################
+
 %package guest-tools
 Summary:        VirtualBox guest tools
 Group:          System/Emulators/PC
@@ -391,7 +400,9 @@ VirtualBox guest addition tools.
 
 
 
+
 ###########################################
+
 %package -n python3-%{name}
 Summary:        Python bindings for %{name}
 Group:          Development/Libraries/Python
@@ -415,7 +426,9 @@ Python XPCOM bindings to %{name}. Used e.g. by vboxgtk package.
 
 
 
+
 ###########################################
+
 %package devel
 Summary:        Devel files for %{name}
 Group:          Development/Libraries/Other
@@ -434,7 +447,9 @@ Development file for %{name}
 
 
 
+
 ###########################################
+
 %package host-source
 Summary:        Source files for %{name} host kernel modules
 Group:          Development/Sources
@@ -470,7 +485,9 @@ sudo /sbin/vboxguestconfig
 
 
 
+
 ###########################################
+
 %package guest-desktop-icons
 Summary:        Icons for guest desktop files
 Group:          System/Emulators/PC
@@ -487,7 +504,9 @@ This package contains icons for guest desktop files that were created on the des
 
 
 
+
 ###########################################
+
 %package vnc
 Summary:        VNC desktop sharing
 Group:          System/Emulators/PC
@@ -565,6 +584,7 @@ This package contains the kernel-modules that VirtualBox uses to create or run v
 # Patch for Leap 15.4
 %patch144 -p1
 %endif
+%patch145 -p1
 # make VB UI background colors look sane again
 %patch999 -p1