diff --git a/libs/ardour/test/interpolation-test.cc b/libs/ardour/test/InterpolationTest.cpp
similarity index 99%
rename from libs/ardour/test/interpolation-test.cc
rename to libs/ardour/test/InterpolationTest.cpp
index 45e350d12b..ababe84cf7 100644
--- a/libs/ardour/test/interpolation-test.cc
+++ b/libs/ardour/test/InterpolationTest.cpp
@@ -1,5 +1,5 @@
 #include <sigc++/sigc++.h>
-#include "interpolation-test.h"
+#include "InterpolationTest.h"
 
 CPPUNIT_TEST_SUITE_REGISTRATION( InterpolationTest );
 
diff --git a/libs/ardour/test/interpolation-test.h b/libs/ardour/test/InterpolationTest.h
similarity index 100%
rename from libs/ardour/test/interpolation-test.h
rename to libs/ardour/test/InterpolationTest.h
diff --git a/libs/ardour/wscript b/libs/ardour/wscript
index 512624ed86..57b2a6cdeb 100644
--- a/libs/ardour/wscript
+++ b/libs/ardour/wscript
@@ -318,7 +318,7 @@ def build(bld):
 		testobj.source       = '''
 			interpolation.cc
 			test/BBTTest.cpp
-			test/interpolation-test.cc
+			test/InterpolationTest.cpp
 			test/testrunner.cpp
 		'''
 		testobj.includes     = obj.includes + ['../pbd/']