diff --git a/.drone.jsonnet b/.drone.jsonnet
index 053f251..66b31b4 100644
--- a/.drone.jsonnet
+++ b/.drone.jsonnet
@@ -30,7 +30,7 @@ local PipelineBuild(os='linux', arch='amd64') = {
         'cp ../source/rust-toolchain .',
         'cp ../source/build.rs .',
         'rustup target add x86_64-unknown-linux-musl',
-        'cargo build --features ${DB} --release',
+        'cargo build --features $DB --release',
         'find . -not -path "./target*" -delete',
         'ls -lah',
         'cp -rT ../source .',
diff --git a/.drone.yml b/.drone.yml
index 831a406..1cbdaad 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -21,7 +21,7 @@ steps:
   - cp ../source/rust-toolchain .
   - cp ../source/build.rs .
   - rustup target add x86_64-unknown-linux-musl
-  - cargo build --features ${DB} --release
+  - cargo build --features $DB --release
   - find . -not -path "./target*" -delete
   - ls -lah
   - cp -rT ../source .