diff --git a/src/ptrarray.c b/src/ptrarray.c
index bcffb77..c499773 100644
--- a/src/ptrarray.c
+++ b/src/ptrarray.c
@@ -42,7 +42,7 @@
 
 void ptr_array_insert(ptrarray_t *pa, void *data, long array_index)
 {
-	if (!pa || !pa->pdata || !data) return;
+	if (!pa || !pa->pdata) return;
 	long remaining = pa->capacity-pa->len;
 	if (remaining == 0) {
 		pa->pdata = realloc(pa->pdata, sizeof(void*) * (pa->capacity + pa->capacity_step));
@@ -89,3 +89,8 @@
 	}
 	return pa->pdata[array_index];
 }
+
+long ptr_array_size(ptrarray_t *pa)
+{
+	return pa->len;
+}
diff --git a/src/ptrarray.h b/src/ptrarray.h
index 2c6136a..ed67351 100644
--- a/src/ptrarray.h
+++ b/src/ptrarray.h
@@ -36,4 +36,5 @@
 void ptr_array_remove(ptrarray_t *pa, long index);
 void ptr_array_set(ptrarray_t *pa, void *data, long index);
 void* ptr_array_index(ptrarray_t *pa, long index);
+long ptr_array_size(ptrarray_t *pa);
 #endif