diff --git a/scripts/indexer-sync-v2.sh b/scripts/indexer-sync-v2.sh
index 3d89d28fd..38dc2caa9 100644
--- a/scripts/indexer-sync-v2.sh
+++ b/scripts/indexer-sync-v2.sh
@@ -51,7 +51,7 @@ determine_schema_version() {
     npx ajv test -d "$def_file" -s "$schema" --valid -c ajv-formats --spec=draft2019
     test_output=$?
 
-    if $test_output; then
+    if [ "$test_output" = 0 ]; then
         log "INFO" "Definition [$def_file] matches schema [$schema]"
     else
         check_version="v0"
@@ -72,7 +72,7 @@ determine_best_schema_version() {
         npx ajv test -d "$def_file" -s "$schema" --valid -c ajv-formats --spec=draft2019
         test_output=$?
 
-        if $test_output; then
+        if [ "$test_output" = 0 ]; then
             log "INFO" "Definition [$def_file] matches schema [$schema]"
             matched_version=$i
             export matched_version