diff --git a/src/native/common/Makefile.am b/src/native/common/Makefile.am
index 1e423849..b8ae9946 100644
--- a/src/native/common/Makefile.am
+++ b/src/native/common/Makefile.am
@@ -11,7 +11,7 @@ libcommon_la_DEPENDENCIES = \
   callbacks/libcallbacks.la
 
 COMMON = \
-  extal.c \
+  extal.cpp \
   extal.h \
   extgl.c \
   extgl.h \
diff --git a/src/native/common/extal.c b/src/native/common/extal.cpp
similarity index 100%
rename from src/native/common/extal.c
rename to src/native/common/extal.cpp