diff --git a/bemenu/bemenu.factor b/bemenu/bemenu.factor
index 952e474..598a6f9 100644
--- a/bemenu/bemenu.factor
+++ b/bemenu/bemenu.factor
@@ -1,8 +1,11 @@
 USING: kernel destructors alien.c-types alien.data strings sequences ;
-USING: bemenu.ffi ;
+USING: bemenu.ffi bemenu.ffi.private ;
+USING: vocabs.parser ;
 
 IN: bemenu
 
+"bemenu.ffi" use-vocab
+
 TUPLE: bemenu-renderer
     ptr name priority ;
 
@@ -13,7 +16,7 @@ TUPLE: bemenu-renderer
         "hi"
     ] with-destructors ;
 
-: bm-get-renderers ( -- renderers )
+: bemenu-get-renderers ( -- renderers )
     0 uint32_t <ref> [ bm_get_renderers ] keep uint32_t deref void* <c-direct-array>
     [
         dup
diff --git a/bemenu/ffi/ffi.factor b/bemenu/ffi/ffi.factor
index 21ec77d..0aef9ee 100644
--- a/bemenu/ffi/ffi.factor
+++ b/bemenu/ffi/ffi.factor
@@ -7,7 +7,6 @@ IN: bemenu.ffi
 
 LIBRARY: bemenu
 
-
 C-TYPE: bm_renderer
 C-TYPE: bm_menu
 C-TYPE: bm_item
@@ -20,12 +19,15 @@ C-TYPE: bm_item
 ! @return true on success, false on failure.
 FUNCTION-ALIAS: bemenu-init bool bm_init ( )
 
+<PRIVATE
 ! Get list of available renderers.
 !
 ! @param out_nmemb Reference to uint32_t where total count of returned renderers will be stored.
 ! @return Pointer to array of bm_renderer instances.
 FUNCTION: bm_renderer** bm_get_renderers ( uint32_t *out_nmemb )
 
+PRIVATE>
+
 ! Get version of the library in 'major.minor.patch' format.
 !
 ! @see @link http://semver.org/ Semantic Versioning @endlink
@@ -33,12 +35,15 @@ FUNCTION: bm_renderer** bm_get_renderers ( uint32_t *out_nmemb )
 ! @return Null terminated C "string" to version string.
 FUNCTION-ALIAS: bemenu-version c-string bm_version ( )
 
+<PRIVATE
+
 ENUM: bm_priorty
     ! renderer runs in terminal
     BM_PRIO_TERMINAL
     ! renderer runs in GUI
     BM_PRIO_GUI ;
 
+
 ! Get name of the renderer.
 !
 ! @param renderer bm_renderer instance.
@@ -51,6 +56,10 @@ FUNCTION: c-string bm_renderer_get_name ( bm_renderer* renderer )
 ! @return bm_priorty enum value.
 FUNCTION: bm_priorty bm_renderer_get_priorty ( bm_renderer* renderer )
 
+PRIVATE>
+
+ALIAS: bm-priorty bm_priorty
+
 ENUM: bm_filter_mode
     BM_FILTER_MODE_DMENU
     BM_FILTER_MODE_DMENU_CASE_INSENSITIVE