1 files changed, 2 insertions, 2 deletions
diff --git a/platform/darwin/src/MGLFillExtrusionStyleLayer.mm b/platform/darwin/src/MGLFillExtrusionStyleLayer.mm
index 1039a8facc..ed6cd58460 100644
--- a/platform/darwin/src/MGLFillExtrusionStyleLayer.mm
+++ b/platform/darwin/src/MGLFillExtrusionStyleLayer.mm
@@ -244,7 +244,7 @@ namespace mbgl {
     MGLAssertStyleLayerIsValid();
     MGLLogDebug(@"Setting fillExtrusionPattern: %@", fillExtrusionPattern);
 
-    auto mbglValue = MGLStyleValueTransformer<std::string, NSString *>().toPropertyValue<mbgl::style::PropertyValue<std::string>>(fillExtrusionPattern, true);
+    auto mbglValue = MGLStyleValueTransformer<mbgl::style::expression::Image, NSString *>().toPropertyValue<mbgl::style::PropertyValue<mbgl::style::expression::Image>>(fillExtrusionPattern, true);
     self.rawLayer->setFillExtrusionPattern(mbglValue);
 }
 
@@ -255,7 +255,7 @@ namespace mbgl {
     if (propertyValue.isUndefined()) {
         propertyValue = self.rawLayer->getDefaultFillExtrusionPattern();
     }
-    return MGLStyleValueTransformer<std::string, NSString *>().toExpression(propertyValue);
+    return MGLStyleValueTransformer<mbgl::style::expression::Image, NSString *>().toExpression(propertyValue);
 }
 
 - (void)setFillExtrusionPatternTransition:(MGLTransition )transition {