diff --git a/project.cbp b/project.cbp
index 45d552c..a686378 100644
--- a/project.cbp
+++ b/project.cbp
@@ -32,11 +32,21 @@
 			<Add option="-Wall" />
 			<Add option="-fexceptions" />
 		</Compiler>
+		<Unit filename="doctest.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
 		<Unit filename="histogram.cpp" />
 		<Unit filename="histogram.h">
 			<Option target="&lt;{~None~}&gt;" />
 		</Unit>
+		<Unit filename="histogram_internal.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
 		<Unit filename="main.cpp" />
+		<Unit filename="svg.cpp" />
+		<Unit filename="svg.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
 		<Unit filename="text.cpp" />
 		<Unit filename="text.h">
 			<Option target="&lt;{~None~}&gt;" />