diff --git a/R/jiebar.R b/R/jiebar.R
index 724c5dd..eff2955 100644
--- a/R/jiebar.R
+++ b/R/jiebar.R
@@ -143,6 +143,16 @@ worker <- function(type = "mix", dict = DICTPATH, hmm = HMMPATH,
   if(!any(type == c("mix","mp","hmm","query","simhash","keywords","tag"))){
     stop("Unkown worker type")
   }
+  jiebapath <- find.package("jiebaR")
+  if(!file.exists(file.path(jiebapath,"dict","jieba.dict.utf8"))){
+    unzip(file.path(jiebapath,"dict","jieba.dict.zip"),exdir =file.path( jiebapath,"dict") )
+  }
+  if(!file.exists(file.path(jiebapath,"dict","hmm_model.utf8"))){
+    unzip(file.path(jiebapath,"dict","hmm_model.zip"),exdir =file.path( jiebapath,"dict") )
+  }
+  if(!file.exists(file.path(jiebapath,"dict","idf.utf8"))){
+    unzip(file.path(jiebapath,"dict","idf.zip"),exdir =file.path( jiebapath,"dict") )
+  }
   result = new.env(parent = emptyenv())
   
   switch(type, 
diff --git a/R/zzz.R b/R/zzz.R
index 4136e04..cbbb22c 100644
--- a/R/zzz.R
+++ b/R/zzz.R
@@ -31,16 +31,7 @@ STOPPATH<-NULL
 #     if (.Platform$OS.type == "windows") {
 #       Sys.setlocale( locale = "English")
 #     }
-    if(!file.exists(file.path(find.package("jiebaR"),"dict","jieba.dict.utf8"))){
-      unzip(file.path(find.package("jiebaR"),"dict","jieba.dict.zip"),exdir =file.path(find.package("jiebaR"),"dict") )
-    }
-    if(!file.exists(file.path(find.package("jiebaR"),"dict","hmm_model.utf8"))){
-      unzip(file.path(find.package("jiebaR"),"dict","hmm_model.zip"),exdir =file.path(find.package("jiebaR"),"dict") )
-    }
-    if(!file.exists(file.path(find.package("jiebaR"),"dict","idf.utf8"))){
-      unzip(file.path(find.package("jiebaR"),"dict","idf.zip"),exdir =file.path(find.package("jiebaR"),"dict") )
-    }
-   
+  
     assign(x = "DICTPATH", file.path(find.package("jiebaR"),"dict","jieba.dict.utf8"),asNamespace('jiebaR'))
     assign(x = "HMMPATH",  file.path(find.package("jiebaR"),"dict","hmm_model.utf8"),asNamespace('jiebaR'))
     assign(x = "USERPATH", file.path(find.package("jiebaR"),"dict","user.dict.utf8"),asNamespace('jiebaR'))