diff --git a/debian/control b/debian/control
index 3270bbb..09bea24 100644
--- a/debian/control
+++ b/debian/control
@@ -25,6 +25,7 @@ Depends: dkms (>> 2.2.1.0),
          ${misc:Depends}
 Suggests: spl (>= ${source:Upstream-Version}),
          linux-libc-dev (< 4.16)
+Conflicts: spl (<< 0.7.9~)
 Provides: spl-modules
 Description: Solaris Porting Layer kernel modules for Linux
  The Solaris Porting Layer (SPL) is a Linux kernel module which provides
diff --git a/debian/control.in b/debian/control.in
index 48f27fe..91242a1 100644
--- a/debian/control.in
+++ b/debian/control.in
@@ -25,6 +25,7 @@ Depends: dkms (>> 2.2.1.0),
          ${misc:Depends}
 Suggests: spl (>= ${source:Upstream-Version}),
          @LINUX_COMPAT@
+Conflicts: spl (<< 0.7.9~)
 Provides: spl-modules
 Description: Solaris Porting Layer kernel modules for Linux
  The Solaris Porting Layer (SPL) is a Linux kernel module which provides