diff --git a/Frameworks/encoding/src/encoding.cc b/Frameworks/encoding/src/encoding.mm
similarity index 100%
rename from Frameworks/encoding/src/encoding.cc
rename to Frameworks/encoding/src/encoding.mm
diff --git a/Frameworks/encoding/target b/Frameworks/encoding/target
index ea71f238..e3fb812e 100644
--- a/Frameworks/encoding/target
+++ b/Frameworks/encoding/target
@@ -1,3 +1,3 @@
-SOURCES = src/*.{cc,capnp}
+SOURCES = src/*.{mm,capnp}
 EXPORT  = src/encoding.h
 LIBS   += "$capnp_prefix/lib/libcapnp.a" "$capnp_prefix/lib/libkj.a"