diff --git a/DOCKER/run.sh b/DOCKER/run.sh
index 2f2d489e..4e7e3603 100755
--- a/DOCKER/run.sh
+++ b/DOCKER/run.sh
@@ -4,7 +4,7 @@ if [[ $BARAK_SEED ]]; then
 	cat ./cmd/barak/$BARAK_SEED | ./build/barak &
 fi
 
-if [[ $FAST_SYNC ]]; then
+if [ "$FAST_SYNC" = "true" ]; then
 	./build/tendermint node --fast_sync
 else 
 	./build/tendermint node