diff --git a/tests.sh b/tests.sh
index 231c33c..f3fe664 100755
--- a/tests.sh
+++ b/tests.sh
@@ -89,7 +89,7 @@ results=()
 for t in tests/*.sh; do
   tests+=("${t}")
   echo "========================= ${t} =========================" &>> tests.log
-  bash ${t} "${cmd}" "${version}" &>> tests.log
+  bash "${t}" "${cmd}" "${version}" &>> tests.log
   results+=(${?})
 done
 echo
diff --git a/tests/export-ods-utf8.sh b/tests/export-ods-utf8.sh
index 4f720f8..288a236 100644
--- a/tests/export-ods-utf8.sh
+++ b/tests/export-ods-utf8.sh
@@ -34,9 +34,9 @@ DATA
 
 ${cmd} --create "tmp/${t}/${t}.csv"
 ${cmd} --export "${t}" --output "tmp/${t}/${t}.ods"
-(cd tmp/${t} &&
-  ssconvert -S ${t}.ods ${t}.csv &&
-  mv ${t}.csv.1 ${t}.output)
+(cd tmp/"${t}" &&
+  ssconvert -S "${t}.ods" "${t}.csv" &&
+  mv "${t}.csv.1" "${t}.output")
 
 # =================================== TEST =================================== #
 
diff --git a/tests/export-ods.sh b/tests/export-ods.sh
index 07ae030..f637684 100644
--- a/tests/export-ods.sh
+++ b/tests/export-ods.sh
@@ -38,9 +38,9 @@ DATA
 
 ${cmd} --create "tmp/${t}/${t}.csv"
 ${cmd} --export "${t}" --output "tmp/${t}/${t}.ods"
-(cd tmp/${t} &&
-  ssconvert -S ${t}.ods ${t}.csv &&
-  mv ${t}.csv.1 ${t}.output)
+(cd tmp/"${t}" &&
+  ssconvert -S "${t}.ods" "${t}.csv" &&
+  mv "${t}.csv.1" "${t}.output")
 
 # =================================== TEST =================================== #
 
diff --git a/tests/export-xls-utf8.sh b/tests/export-xls-utf8.sh
index 732a32f..40a269e 100644
--- a/tests/export-xls-utf8.sh
+++ b/tests/export-xls-utf8.sh
@@ -34,9 +34,9 @@ DATA
 
 ${cmd} --create "tmp/${t}/${t}.csv"
 ${cmd} --export "${t}" --output "tmp/${t}/${t}.xls"
-(cd tmp/${t} &&
-  ssconvert -S ${t}.xls ${t}.csv &&
-  mv ${t}.csv ${t}.output)
+(cd tmp/"${t}" &&
+  ssconvert -S "${t}.xls" "${t}.csv" &&
+  mv "${t}.csv" "${t}.output")
 
 # =================================== TEST =================================== #
 
diff --git a/tests/export-xls.sh b/tests/export-xls.sh
index 0116b5e..c298c6e 100644
--- a/tests/export-xls.sh
+++ b/tests/export-xls.sh
@@ -34,9 +34,9 @@ DATA
 
 ${cmd} --create "tmp/${t}/${t}.csv"
 ${cmd} --export "${t}" --output "tmp/${t}/${t}.xls"
-(cd tmp/${t} &&
-  ssconvert -S ${t}.xls ${t}.csv &&
-  mv ${t}.csv ${t}.output)
+(cd tmp/"${t}" &&
+  ssconvert -S "${t}.xls" "${t}.csv" &&
+  mv "${t}.csv" "${t}.output")
 
 # =================================== TEST =================================== #
 
diff --git a/tests/export-xlsx-utf8.sh b/tests/export-xlsx-utf8.sh
index 927dec8..9875b7e 100644
--- a/tests/export-xlsx-utf8.sh
+++ b/tests/export-xlsx-utf8.sh
@@ -34,9 +34,9 @@ DATA
 
 ${cmd} --create "tmp/${t}/${t}.csv"
 ${cmd} --export "${t}" --output "tmp/${t}/${t}.xlsx"
-(cd tmp/${t} &&
-  ssconvert -S ${t}.xlsx ${t}.csv &&
-  mv ${t}.csv ${t}.output)
+(cd tmp/"${t}" &&
+  ssconvert -S "${t}.xlsx" "${t}.csv" &&
+  mv "${t}.csv" "${t}.output")
 
 # =================================== TEST =================================== #
 
diff --git a/tests/export-xlsx.sh b/tests/export-xlsx.sh
index a106efc..2d9d397 100644
--- a/tests/export-xlsx.sh
+++ b/tests/export-xlsx.sh
@@ -34,9 +34,9 @@ DATA
 
 ${cmd} --create "tmp/${t}/${t}.csv"
 ${cmd} --export "${t}" --output "tmp/${t}/${t}.xlsx"
-(cd tmp/${t} &&
-  ssconvert -S ${t}.xlsx ${t}.csv &&
-  mv ${t}.csv ${t}.output)
+(cd tmp/"${t}" &&
+  ssconvert -S "${t}.xlsx" "${t}.csv" &&
+  mv "${t}.csv" "${t}.output")
 
 # =================================== TEST =================================== #