diff --git a/Shorewall/Perl/Shorewall/Config.pm b/Shorewall/Perl/Shorewall/Config.pm
index 701e5c9..26327c8 100644
--- a/Shorewall/Perl/Shorewall/Config.pm
+++ b/Shorewall/Perl/Shorewall/Config.pm
@@ -2332,6 +2332,8 @@ sub determine_kernelversion() {
 
     if ( $kernelversion =~ /^(\d+)\.(\d+).(\d+)/ ) {
 	$capabilities{KERNELVERSION} = sprintf "%d%02d%02d", $1 , $2 , $3;
+    } elsif ( $kernelversion =~ /^(\d+)\.(\d+)/ ) {
+	$capabilities{KERNELVERSION} = sprintf "%d%02d00", $1 , $2;
     } else {
 	fatal_error "Unrecognized Kernel Version Format ($kernelversion)";
     }
diff --git a/Shorewall/lib.cli b/Shorewall/lib.cli
index a21aa10..dbb0433 100644
--- a/Shorewall/lib.cli
+++ b/Shorewall/lib.cli
@@ -1882,7 +1882,17 @@ determine_capabilities() {
     [ -n "$IP" ] && $IP rule add help 2>&1 | grep -q /MASK && FWMARK_RT_MASK=Yes
 
     CAPVERSION=$SHOREWALL_CAPVERSION
-    KERNELVERSION=$(printf "%d%02d%02d" $(uname -r 2> /dev/null | sed -e 's/-.*//' -e 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*$/\1 \2 \3/g'))
+   
+    KERNELVERSION=$(uname -r 2> /dev/null | sed -e 's/-.*//')
+
+    case "$KERNELVERSION" in 
+	*.*.*)
+	    KERNELVERSION=$(printf "%d%02d%02d" $(echo $KERNELVERSION | sed -e 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*$/\1 \2 \3/g'))
+	    ;;
+	*)
+	    KERNELVERSION=$(printf "%d%02d00" $(echo $KERNELVERSION | sed -e 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\).*$/\1 \2/g'))
+	    ;;
+    esac
 }
 
 report_capabilities() {
diff --git a/Shorewall6/lib.cli b/Shorewall6/lib.cli
index 08e4bc7..11c79d9 100644
--- a/Shorewall6/lib.cli
+++ b/Shorewall6/lib.cli
@@ -1712,7 +1712,17 @@ determine_capabilities() {
     [ -n "$IP" ] && $IP rule add help 2>&1 | grep -q /MASK && FWMARK_RT_MASK=Yes
 
     CAPVERSION=$SHOREWALL_CAPVERSION
-    KERNELVERSION=$(printf "%d%02d%02d" $(uname -r 2> /dev/null | sed -e 's/-.*//' -e 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*$/\1 \2 \3/g'))
+
+    KERNELVERSION=$(uname -r 2> /dev/null | sed -e 's/-.*//')
+
+    case "$KERNELVERSION" in 
+	*.*.*)
+	    KERNELVERSION=$(printf "%d%02d%02d" $(echo $KERNELVERSION | sed -e 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*$/\1 \2 \3/g'))
+	    ;;
+	*)
+	    KERNELVERSION=$(printf "%d%02d00" $(echo $KERNELVERSION | sed -e 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\).*$/\1 \2/g'))
+	    ;;
+    esac
 }
 
 report_capabilities() {