diff --git a/docker/boltzclient/Dockerfile b/docker/boltzclient/Dockerfile
index c5d547fe9..b56ae03a9 100644
--- a/docker/boltzclient/Dockerfile
+++ b/docker/boltzclient/Dockerfile
@@ -18,7 +18,7 @@ RUN uv sync --all-extras
 ENV LNBITS_PORT="5000"
 ENV LNBITS_HOST="0.0.0.0"
 ENV LNBITS_BACKEND_WALLET_CLASS="BoltzWallet"
-ENV FUNDING_SOURCE_MAX_RETRIES=10
+ENV FUNDING_SOURCE_MAX_RETRIES="10"
 
 # Boltzd
 ENV BOLTZ_CLIENT_ENDPOINT="127.0.0.1:9002"
diff --git a/docker/sparkl2/Dockerfile b/docker/sparkl2/Dockerfile
index f09ecf4da..b097a0192 100644
--- a/docker/sparkl2/Dockerfile
+++ b/docker/sparkl2/Dockerfile
@@ -22,7 +22,7 @@ ENV LNBITS_BACKEND_WALLET_CLASS="SparkL2Wallet"
 ENV LNBITS_RESERVE_FEE_MIN="20000"
 ENV LNBITS_RESERVE_FEE_PERCENT="1"
 ENV LNBITS_FUNDING_SOURCE_PAY_INVOICE_WAIT_SECONDS="20"
-ENV FUNDING_SOURCE_MAX_RETRIES=10
+ENV FUNDING_SOURCE_MAX_RETRIES="10"
 
 # spark sidecar
 ENV SPARK_NETWORK="MAINNET"