diff --git a/include/mbgl/style/layers/custom_layer.hpp b/include/mbgl/style/layers/custom_layer.hpp
index 6bde08782..edc8d43f8 100644
--- a/include/mbgl/style/layers/custom_layer.hpp
+++ b/include/mbgl/style/layers/custom_layer.hpp
@@ -65,9 +65,7 @@ public:
 };
 
 template <>
-inline bool Layer::is<CustomLayer>() const {
-    return type == Type::Custom;
-}
+bool Layer::is<CustomLayer>() const;
 
 } // namespace style
 } // namespace mbgl
diff --git a/platform/node/bitrise.yml b/platform/node/bitrise.yml
index 9b066f26b..68829d966 100644
--- a/platform/node/bitrise.yml
+++ b/platform/node/bitrise.yml
@@ -62,6 +62,6 @@ workflows:
             gem install xcpretty --no-rdoc --no-ri
             export BUILDTYPE=Release
             export PUBLISH=true
-            make node
+            make test-node
             ./platform/node/scripts/after_success.sh
     - slack: *slack
diff --git a/src/mbgl/style/layers/custom_layer.cpp b/src/mbgl/style/layers/custom_layer.cpp
index 3407a7f5a..2504f3f15 100644
--- a/src/mbgl/style/layers/custom_layer.cpp
+++ b/src/mbgl/style/layers/custom_layer.cpp
@@ -20,5 +20,10 @@ CustomLayer::CustomLayer(const Impl& other)
 
 CustomLayer::~CustomLayer() = default;
 
+template <>
+bool Layer::is<CustomLayer>() const {
+    return type == Type::Custom;
+}
+
 } // namespace style
 } // namespace mbgl