diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index ebf2d1c..1b83a8d 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -2644,7 +2644,7 @@
 			close $ct;
 
 			(my $ctag = $tagfile) =~ s#.*/##;
-			if ($val =~ /\d+/) {
+			if ($val =~ /^\d+$/) {
 				$ctags->{$ctag} = $val;
 			} else {
 				$ctags->{$ctag} = 1;
diff --git a/t/t9500-gitweb-standalone-no-errors.sh b/t/t9500-gitweb-standalone-no-errors.sh
index f5648a6..5329715 100755
--- a/t/t9500-gitweb-standalone-no-errors.sh
+++ b/t/t9500-gitweb-standalone-no-errors.sh
@@ -644,6 +644,14 @@
 	'ctags: search projects by non existent tag' \
 	'gitweb_run "by_tag=non-existent"'
 
+test_expect_success \
+	'ctags: malformed tag weights' \
+	'mkdir -p .git/ctags &&
+	 echo "not-a-number" > .git/ctags/nan &&
+	 echo "not-a-number-2" > .git/ctags/nan2 &&
+	 echo "0.1" >.git/ctags/floating-point &&
+	 gitweb_run'
+
 # ----------------------------------------------------------------------
 # categories