diff --git a/include/tests_authentication b/include/tests_authentication
index 733dfc4f..05f107ae 100644
--- a/include/tests_authentication
+++ b/include/tests_authentication
@@ -696,7 +696,7 @@
         else
             Display --indent 2 --text "- PAM modules" --result "${STATUS_FOUND}" --color GREEN
         fi
-        unset DIR; unset FILE; unset FIND
+        unset DIR FILE FIND
     fi
 #
 #################################################################################
diff --git a/include/tests_php b/include/tests_php
index ef43f282..23ece909 100644
--- a/include/tests_php
+++ b/include/tests_php
@@ -147,7 +147,7 @@
             Display --indent 2 --text "- Checking PHP" --result "${STATUS_NOT_FOUND}" --color WHITE
             LogText "Result: no php.ini file found"
         fi
-        unset DIR; unset FILE; unset FIND
+        unset DIR FILE FIND
     fi
 #
 #################################################################################
diff --git a/include/tests_webservers b/include/tests_webservers
index be78fb11..1e893f26 100644
--- a/include/tests_webservers
+++ b/include/tests_webservers
@@ -600,7 +600,7 @@
                 LogText "Result: directory ${DIR} not found, skipping search in this directory."
             fi
         done
-        unset DIR; unset FILE; unset FIND
+        unset DIR FILE FIND
     fi
 #
 #################################################################################