diff --git a/src/plugins/hllapi/Makefile.in b/src/plugins/hllapi/Makefile.in
index 1d46c60..1b02fcb 100644
--- a/src/plugins/hllapi/Makefile.in
+++ b/src/plugins/hllapi/Makefile.in
@@ -215,7 +215,7 @@ $(SRCDIR): \
 	clean
 
 	@$(MKDIR) $@
-	@$(INSTALL_DATA) *.c *.h *.in *.cbp $@
+	@$(INSTALL_DATA) *.c *.cc *.h *.in *.cbp $@
 
 
 #---[ Debug Targets ]--------------------------------------------------------------------
--
libgit2 0.21.2