diff --git a/tools/install_ewf.bat b/tools/install_ewf.bat
index fcc2f281..b50ad378 100644
--- a/tools/install_ewf.bat
+++ b/tools/install_ewf.bat
@@ -76,16 +76,17 @@ echo Install contrib library: nino
 rem #--- IF Missing ---#
 
 echo Install json if missing
-if not exist %TMP_TARGET_DIR%/contrib/library/text/parser/json %COPYCMD% %TMP_DIR%/contrib/library/text/parser/json	%TMP_TARGET_DIR%/contrib/library/text/parser/json
+echo on
+if not exist %TMP_TARGET_DIR%\contrib\library\text\parser\json %COPYCMD% %TMP_DIR%\contrib\library\text\parser\json	%TMP_TARGET_DIR%\contrib\library\text\parser\json
 
 echo Install cURL if missing
-if not exist %TMP_TARGET_DIR%/library/cURL %COPYCMD% %TMP_DIR%/contrib/ise_library/cURL	%TMP_TARGET_DIR%/contrib/library/network/cURL
+if not exist %TMP_TARGET_DIR%\library\cURL %COPYCMD% %TMP_DIR%\contrib\ise_library\cURL	%TMP_TARGET_DIR%\contrib\library\network\cURL
 
 echo Install eapml if missing
-if not exist %TMP_TARGET_DIR%/contrib/library/math/eapml %COPYCMD% %TMP_DIR%/contrib/ise_library/math/eapml	%TMP_TARGET_DIR%/contrib/library/math/eapml
+if not exist %TMP_TARGET_DIR%\contrib\library\math\eapml %COPYCMD% %TMP_DIR%\contrib\ise_library\math\eapml	%TMP_TARGET_DIR%\contrib\library\math\eapml
 
-echo Install eel is missing
-if not exist %TMP_TARGET_DIR%/contrib/library/text/encryption/eel %COPYCMD% %TMP_DIR%/contrib/ise_library/text/encryption/eel	%TMP_TARGET_DIR%/contrib/library/text/encryption/eel
+echo Install eel if missing
+if not exist %TMP_TARGET_DIR%\contrib\library\text\encryption\eel %COPYCMD% %TMP_DIR%\contrib\ise_library\text\encryption\eel	%TMP_TARGET_DIR%\contrib\library\text\encryption\eel
 
 
 rem #--- Update ecf files ---#
diff --git a/tools/install_ewf.sh b/tools/install_ewf.sh
index c3cbd619..64c11a64 100644
--- a/tools/install_ewf.sh
+++ b/tools/install_ewf.sh
@@ -78,7 +78,7 @@ echo Install eapml if missing
 mkdir -p $TMP_TARGET_DIR/contrib/library/math
 COPYCMDIFMISSING $TMP_DIR/contrib/ise_library/math/eapml	$TMP_TARGET_DIR/contrib/library/math/eapml
 
-echo Install eel is missing
+echo Install eel if missing
 mkdir -p $TMP_TARGET_DIR/contrib/library/text/encryption
 COPYCMDIFMISSING $TMP_DIR/contrib/ise_library/text/encryption/eel	$TMP_TARGET_DIR/contrib/library/text/encryption/eel