diff --git a/legacy/eina/src/modules/mp/fixed_bitmap/eina_fixed_bitmap.c b/legacy/eina/src/modules/mp/fixed_bitmap/eina_fixed_bitmap.c
index 967a4adbc3..bbd49b41d9 100644
--- a/legacy/eina/src/modules/mp/fixed_bitmap/eina_fixed_bitmap.c
+++ b/legacy/eina/src/modules/mp/fixed_bitmap/eina_fixed_bitmap.c
@@ -57,7 +57,7 @@ struct _Eina_Fixed_Bitmap_Pool
    uint32_t bitmask;
 };
 
-static inline int
+static inline size_t
 _eina_rbtree_inlist_delta(void)
 {
    Eina_Fixed_Bitmap_Pool tmp;