diff --git a/dist/main/index.js b/dist/main/index.js
index 633cacba..652f280b 100644
--- a/dist/main/index.js
+++ b/dist/main/index.js
@@ -7973,7 +7973,7 @@ async function registerPostBuildHook(cachixBin, daemonDir) {
       done | xargs
     }
 
-    if [[ -n $PUSH_FILTER ]]; then
+    if [ -n "$PUSH_FILTER" ]; then
       OUT_PATHS=$(filterPaths $PUSH_FILTER "$OUT_PATHS")
     fi
 
diff --git a/src/main.ts b/src/main.ts
index 127f39ab..82598840 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -292,7 +292,7 @@ async function registerPostBuildHook(cachixBin: string, daemonDir: string) {
       done | xargs
     }
 
-    if [[ -n $PUSH_FILTER ]]; then
+    if [ -n "$PUSH_FILTER" ]; then
       OUT_PATHS=$(filterPaths $PUSH_FILTER "$OUT_PATHS")
     fi