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-rw-r--r--platform/darwin/image.mm2
1 files changed, 1 insertions, 1 deletions
diff --git a/platform/darwin/image.mm b/platform/darwin/image.mm
index f6a8a6783c..31373e9d15 100644
--- a/platform/darwin/image.mm
+++ b/platform/darwin/image.mm
@@ -11,7 +11,7 @@
namespace mbgl {
namespace util {
-std::string compress_png(int width, int height, void *rgba) {
+std::string compress_png(int width, int height, const void *rgba) {
CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, rgba, width * height * 4, NULL);
if (!provider) {
return "";