diff --git a/tools/qfcc/include/set.h b/tools/qfcc/include/set.h
index 01d17b4a6..65af7bdc8 100644
--- a/tools/qfcc/include/set.h
+++ b/tools/qfcc/include/set.h
@@ -69,6 +69,7 @@ int set_is_intersecting (const set_t *s1, const set_t *s2);
 int set_is_equivalent (const set_t *s1, const set_t *s2);
 int set_is_subset (const set_t *set, const set_t *sub);
 int set_is_member (const set_t *set, unsigned x);
+unsigned set_size (const set_t *set);
 setstate_t *set_first (const set_t *set);
 setstate_t *set_next (setstate_t *setstate);
 const char *set_as_string (const set_t *set);
diff --git a/tools/qfcc/source/set.c b/tools/qfcc/source/set.c
index 9ff61ca86..57279bf71 100644
--- a/tools/qfcc/source/set.c
+++ b/tools/qfcc/source/set.c
@@ -269,6 +269,18 @@ set_is_member (const set_t *set, unsigned x)
 	return (set->map[x / BITS] & (1 << (x % BITS))) != 0;
 }
 
+unsigned
+set_size (const set_t *set)
+{
+	unsigned    count = 0;
+	unsigned    i;
+
+	for (i = 0; i < set->size; i++)
+		if (set_is_member (set, i))
+			count++;
+	return count;
+}
+
 setstate_t *
 set_first (const set_t *set)
 {