diff --git a/functions/check_dead.sh b/functions/check_dead.sh
index 209d74e2b..c7795bc9a 100644
--- a/functions/check_dead.sh
+++ b/functions/check_dead.sh
@@ -143,7 +143,6 @@ check_alive() {
 #   $1: file to process
 # Output:
 #   dead.tmp
-#   exit status 0 (if dead domains found)
 #   exit status 1 (if dead domains not found)
 find_dead() {
     sed 's/^/||/; s/$/^/' "$1" > formatted_domains.tmp
diff --git a/functions/check_parked.sh b/functions/check_parked.sh
index 45ada87f8..eb67b3e55 100644
--- a/functions/check_parked.sh
+++ b/functions/check_parked.sh
@@ -64,7 +64,6 @@ add_unparked_domains() {
 #   $1: file to process
 # Output:
 #   parked_domains.tmp
-#   exit status 0 (if parked domains found)
 #   exit status 1 (if parked domains not found)
 retrieve_parked() {
     # Truncate temporary files between runs
diff --git a/functions/test_functions.sh b/functions/test_functions.sh
index 926638a49..392eb08c1 100644
--- a/functions/test_functions.sh
+++ b/functions/test_functions.sh
@@ -127,6 +127,9 @@ TEST_RETRIEVE_VALIDATE() {
         mv xab data/pending/domains_google_search_search-term-1.tmp
         mv xac data/pending/domains_google_search_search-term-2.tmp
 
+        # Prepare sample raw light file
+        cp "$RAW" "$RAW_LIGHT"
+
         # Run retrieval script
         run_script retrieve_domains.sh
     fi
@@ -135,7 +138,7 @@ TEST_RETRIEVE_VALIDATE() {
     if [[ "$script_to_test" == 'validate' ]]; then
         # Use input.txt as sample raw files to test
         cp input.txt "$RAW"
-        cp input.txt "$RAW_LIGHT"
+        cp "$RAW" "$RAW_LIGHT"
 
         # Expected output for light version
         cp out_raw.txt out_raw_light.txt
@@ -487,7 +490,6 @@ test_source_log() {
 
 # TEST: exclusion of specific sources from light version
 test_light_build() {
-    cp "$RAW" "$RAW_LIGHT"
     # INPUT
     printf "raw-light-test.com\n" >> data/pending/domains_guntab.com.tmp
     # EXPECTED OUTPUT
@@ -600,9 +602,7 @@ run_script() {
     printf "%s\n" "----------------------------------------------------------------------"
 
     # Return 1 if script has an exit status of 1
-    if [[ "$errored" == true ]]; then
-        return 1
-    fi
+    [[ "$errored" == true ]] && return 1 || return 0
 }
 
 # Function 'check_and_exit' is a shell wrapper that checks if the script