diff --git a/testcases/system-test/system-integration/os-basic/oe_test_catman/oe_test_catman.sh b/testcases/system-test/system-integration/os-basic/oe_test_catman/oe_test_catman.sh
index 9be874a5b4e0f4756ef71d25f836b9809a2c5968..c8eab28604f30ab7946d9e9947627976b7cf1f89 100644
--- a/testcases/system-test/system-integration/os-basic/oe_test_catman/oe_test_catman.sh
+++ b/testcases/system-test/system-integration/os-basic/oe_test_catman/oe_test_catman.sh
@@ -21,7 +21,8 @@ source ${OET_PATH}/libs/locallibs/common_lib.sh
 
 function pre_test() {
     LOG_INFO "Start to prepare the test environment."
-    OLD_LANG=$LANG
+    DNF_INSTALL man-pages-help
+	OLD_LANG=$LANG
     export LANG=en_US.UTF-8    
     LOG_INFO "End to prepare the test environment."
 }
@@ -45,7 +46,8 @@ function run_test() {
 
 function post_test() {
     LOG_INFO "start environment cleanup."
-    export LANG=${OLD_LANG}
+    DNF_REMOVE
+	export LANG=${OLD_LANG}
     LOG_INFO "Finish environment cleanup!"
 }