diff --git a/ChangeLog b/ChangeLog
index 02e5a7741..9832e46c3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2019-03-20  Dirk Eddelbuettel  <edd@debian.org>
+
+	* src/date.cpp: Renamed from Date.cpp
+	* src/module.cpp: Renamed from Module.cpp
+	* src/rcpp_init.cpp: Renamed from Rcpp_init.cpp
+
 2019-03-19  Dirk Eddelbuettel  <edd@debian.org>
 
 	* DESCRIPTION (Version, Date): Roll minor version
diff --git a/src/Date.cpp b/src/date.cpp
similarity index 100%
rename from src/Date.cpp
rename to src/date.cpp
diff --git a/src/Module.cpp b/src/module.cpp
similarity index 100%
rename from src/Module.cpp
rename to src/module.cpp
diff --git a/src/Rcpp_init.cpp b/src/rcpp_init.cpp
similarity index 100%
rename from src/Rcpp_init.cpp
rename to src/rcpp_init.cpp