diff --git a/bin/xtea b/bin/xtea
index ec1103b..d67984c 100755
--- a/bin/xtea
+++ b/bin/xtea
@@ -1269,6 +1269,8 @@ if __name__ == '__main__':
         b_denovo=options.denovo
     ####
 
+        s_wfolder = os.path.abspath(s_wfolder)
+
         if s_wfolder[-1]!="/":
             s_wfolder+="/"
         if os.path.exists(s_wfolder) == False:
diff --git a/bin/xtea_hg19 b/bin/xtea_hg19
index a87b5f5..1b2738f 100755
--- a/bin/xtea_hg19
+++ b/bin/xtea_hg19
@@ -4,6 +4,7 @@ import os
 from subprocess import *
 from optparse import OptionParser
 import ntpath
+
 #import global_values
 ILLUMINA="illumina"
 X10="10X"
@@ -1173,6 +1174,8 @@ if __name__ == '__main__':
         b_resume=options.resume
         b_denovo = options.denovo
 
+        s_wfolder = os.path.abspath(s_wfolder)
+
         if s_wfolder[-1]!="/":
             s_wfolder+="/"
         if os.path.exists(s_wfolder) == False:
diff --git a/bin/xtea_long b/bin/xtea_long
index c69157a..2fbca23 100755
--- a/bin/xtea_long
+++ b/bin/xtea_long
@@ -484,6 +484,8 @@ if __name__ == '__main__':
         b_clean=options.clean
         i_peak_win = options.win #maximum window size when try to cluster the breakpoints
 
+        s_wfolder = os.path.abspath(s_wfolder)
+
         if s_wfolder[-1]!="/":
             s_wfolder+="/"
         if os.path.exists(s_wfolder) == False: